Database Users

Strange HD2 SD Card Problems

My HD2 worked fine for the first few months I had it, but then one day my SD card unexpectedly crashed... completely... no reformatting, no salvaging, it wasn't recognized by the phone or my computer or any other device I tried it in.
No big deal, I thought, it happens.
I got a new SD card. Used the opportunity to try a new ROM (dZenkins 1.80.0515).
Started reinstalling stuff and after about 2 days, the new SD card started losing data, in less than a half a day it died too. Same thing, completely fried.
So I got another one. This one, in less than 6 hours, has started showing the same symptoms. I'm expecting it to die any minute.
All 3 cards were 8 GB, Micro SD. Seem legit (even if they're not 100% genuine cards, its unlikely all 3 would experience the same failure).
Also, it happened on my original ROM and now on the new ROM, so I think it's unlikely to be software related...?
With this last (3rd) card, I was very careful to always plug it in to the computer as a "hard drive" and to always eject it through Windows before taking the USB out.
So, I'm totally stumped. Any thoughts?
I did some research and it seems like from time-to-time HTC phones have had a problem with destroying their removable storage cards. Has anyone experienced this with the HD2?
Living in Kunming, China, its going to be tough to get an HTC repair on this thing...

Have you tried another MicroSD Brand?

Yep, tried different brands, still the exact same symptoms.

Same here. My card last only 2 days after purchased. Same problem, it just crashed, not even able to be reformatted or read by pc. It just "gone". Now I'm using 16G, and still working on the replacement. By the way, I'm in Jakarta.

same problem here
i use 16 gb micro sd
i started to have acces troubles to some of my folders
my firts card died 2 days ago
is not recogised anymore what so ever

Contacted HTC, they said try hard reset.
Of course I already did that, no change in the problem. I hard-reset after each failure, but the problem keeps recurring.
Other people who have experienced this problem: Did changing to a different size card help? Or changing how you synced your device?

Today I gave the HTC distributor a visit. They said that they HAD ALREADY WARN ALL THE SELLERS ABOUT SANDISK PROBLEM WITH HTC HD2!
Wow, that's quite a revelation!
So, maybe next time you better buy memorycard other than Sandisk.

I've had problems with the HD2 and microSDHCs. Decided to disable the storage card power saving features on a just in case basis and haven't had any problems since (touches his wood). Purely anecdotal but it worked for me.

Answer is here !!!
Hey Guys !!! I have HAd the same problem when i newly got my Leo ... three 8GB sandisk cards were ruined .. read only 30 MB ... i have changed to kingstone 8GB and now i have been working very good using my new card for more than two months !!

yep same thing happend to me last nite . i had a sandisk 8 gig card , and try to format it though my pc and still nowt .
i wont be buying a sandisk card again.

I'm using kingston 8Gb card since ever, no problem with it.

I been using a transcend sd card 8 gig and works fine, never though the cheap brand would be so good

Me too, Using free 8G scandisk .. 2 week gone, then change another 8G scandsk 1 mth gone, then downgrade to 4G scandisk .. 2mth usage gone, now change to 4G kinsgton, already 2mth old ...hope that fine ..
but my old Tytn II, from already 3 years old ..the 2gb kinsgton never let me down ...
Is it the phone structure cause the Sd card burn??? if I not wrong the HD2 processor is under the memory card ....

Reformatted card in my NIKON
Hi, I have had the same problem with my 16Gb SDHC card in HD2. Neither Windows or Linux could reformat/read/write the card correctly.
Tried my camera (nikon) which can reformat the card. Success!
Still the card failed when i copyed the old rescued /backup contents.
Then I removed the exchange sync to the card and moved the thousands of pictures and videos (Camera folder) (renamed folder).
And now the card seems to work again?!?
now I am able to take pictures and videos without getting a corrupted card...

hi,i'm from nanjing,china,maybe you got three 括容卡,i just buy two cards which were you described. Now i am using a real 8G kingston SDHC card and a 4G card

this problem also happen to me, twice ...sandisk and transcend 8G...now still looking the best SDHC for my HD2

SD card will not format
Hi -
I recently flashed my phone to the android market after i previously flashed windows7. The phone works great.. love it!!!
Only thing is it does not read my card?? I cannot format it or anything.
I have a micro sd 4gb (co4g).. am i using the wrong size sd card?
Thanks for any help!?

egates81 said:
Hi -
I recently flashed my phone to the android market after i previously flashed windows7. The phone works great.. love it!!!
Only thing is it does not read my card?? I cannot format it or anything.
I have a micro sd 4gb (co4g).. am i using the wrong size sd card?
Thanks for any help!?
Click to expand...
Click to collapse
If you were using WP7 then switched to Android than the WP7 is the problem. WP7 formats your SD card with a funky format, I forget what it is called. You see WP7 uses the SD card as the internal memory, WP7 native devices also do this to as they use SD cards for internal memory. Anyway the easiest way to fix this is to SD card in a adapter and put it in a digital camera and formatting it then format it on your computer with Fat 32. The digital cameras can remove that funky format and you will not have to get special software to do it.

Stupid WP7!!!!
I destroyed 2 SD cards so far within 1 day. It happened when I installed that new updateable YukiXbmod Windows phone 7.5 ROM. It just RUINED my Stock 2GB Sandisk and my 8GB Transcend!
I really hope that it isn't the phone f*****g those Sds up! Otherwise I don't know what to do!
---------- Post added at 10:22 PM ---------- Previous post was at 10:09 PM ----------
Pls if ANYONE else has issues related to this ROM or WP7 in general tell me if you have a solution!
EDIT: I feel stupid... My SD cards are both functioning and they are NOT ruined. They are only locked by that WP7 ROM. I find it embarrasing I missed out on the part with the 1:1 chance of locking your SD.
EDIT2: And it's quite easy to retrive the cards

I had 2 8Gb cards 'killed' by Xbmod Yuki Mango + Gingerbread Android off SD. One card lasted a week before just dying. Had it formatted in Nokia N95 phone, but even though the format went ahead, the message read that the card is locked and demanded password. I formatted again, after which it was no longer functioning at all - nothing could be done. So I got it swapped for the same, which lasted 2 weeks - the same story - it just died. When I came to the shop to see if they'll swap it again, they questioned the chances of 2 cards just failing within a short period of time like that. Now on a third card, different brand, but if it goes, I say it's the ROMs, not the cards.

HD2 fried my 16GB card?

Ok, I have SPB backup to backup my device every morning at 2am. I have been doing this for the past few months, with no problems at all. Anyway this morning I woke up, and there was a message on the screen saying "backup unsuccessful" but the HD2 did soft reset, because I seen the splash screen for a few seconds.
Anyway I noticed that the wallpaper was not showing, and didn't think anything of it at first. But when I tried playing some music, my device didn't show the Micro SD card as being installed. So I popped the card out, and back in, and still the HD2 couldn't read it. Also under the "SD card & phone memory" it shows no SD card installed, even though the card it in the HD2.
Got home, and tried putting the Micro SD card in my PC, and even my PC won't read the card. Don't get any error messages, put it just shows nothing?
Bit gutted about this, as I had my last 3 backups on the SD card, along with other documents I need.
Suggestions please?

seems the hd2 is hard on memory cards. I scan and fix mine about 3x a week just to be sure. Since then I haven't had any problems.

My memory card would not allow me to add anything on to it.,.,pics I took wouldn't save and such.,I even tried it in a digital camera with the same results. I couldn't even format it on my PC.,just gave me an unsuccessful reply. One thing I did notice was I couldn't move certain stuff off the card (I think it was in opera) it would show me the file and when I tried to move it off the card it said the item no longer exists.,or something along those lines.,(sorry I'm at work and it's been a while since I have had this happen..,I could always reattempt and post results if you guys would like) I threw in an 8G card and everything has been fine.,but would really like my 16g card back

nrfitchett4 said:
seems the hd2 is hard on memory cards. I scan and fix mine about 3x a week just to be sure. Since then I haven't had any problems.
Click to expand...
Click to collapse
Gonna keep that in mind. Purchased a new 8GB card, but had to restart my phone from SCRATCH!

Hi
There is a quick link to find out if you cards are real or not? I cannot post this link , but Google detecting usb counterfeit drives.
I know a lot of people buy cheap from ebay etc, and few are real good copys. Always remember to buy sealed branded makes with the class in the circle (2,4 or 6)
Living here in Thailand i know all about the copies!! I bought a few, and yes they were copies not 8gb, but 2gb. so at least with the link above it can keep you right.
Also when you get your new real card, erase it in you mobile, then format it before use.
I back up my SD to my D/Drive, but i unhide and show all files on the main computer to make sure all files are transfering over, including the hidden ones.
Just a few tips lads.
Russ

Hi, My 2 MicroSdHC 8GB Memory card experienced the same. 1st card only work for 1 and a half day and the 2nd card only work for 1 day!! It's showed NO SD CARD on my HTC HD2 Leo. I bought both card on Ebay. They sent me the replacement card. Unfortunately both card are same. They claimed that they are selling 100% Genuine Micro SD Card!! Lucky I am getting my full refund from them after open a dispute!! Now, I am trying to get other 16GB MicroSDHC for mh HD2 Leo. Hopefully the new 16GB card work well with my HD2 Leo.

bad luck or faulty streak?

hi
i have my streak for a week, the 2nd day i got it i turned it off and went to the +/-vol + power screen to do a factory reset but i changed my mind and rebooted phone again, after that the 16GB card wasn't being detected anymore and even formating it didn't bring it to life again. In windows sometimes it showed up as a 30MB card but i couldn't even format it, some error about bad blocks.
So i used a 8GB card during the week and yesterday i bought a class 4 16GB card, it was working fine untill this morning when i tried to do update of the os, i went to the same screen but forgot to rename the file to update.pkg so i rebooted the phone again to rename it, but again when it came onto the os, same thing, it detects the card as blank but it can't format it... so i have now another broken sd card...
i did a factory reset while using the 8GB card so i dun think the problem is just cause of going to the black update.pkg thing screen...
anybody has had any 16GB faulty card?
what do u guys think? my streak hates 16GB cards and is faulty? or i am the proud owner of 2 faulty 16GB in a row (a class 2 and a class 4, both sandisk)?

My streak came with 16 gig card. Had no issues with it so far. I've put DJ STEVES Rom on as well.

btw, on both ocasions i had the phone connected to the usb cable and to the computer... could that be a cause?
maybe i'll just go buy another 16GB microsd card and play around with it to see if it happens again!
update: tested the card now with the program "active partition recovery" and it gives me an errors saying "bad signature in sector 0 on 86h" ... dunno what it means tho

ok, been trying a bunch of bad blocks recovery programs, mbr fix programs, etc, none works so i guess the card is unrecoverable and is really physically damaged...
just 2 questions before i decide if i buy a new card or send the phone back to shop (it'll hurt having to wait 2 or 3 weeks for a replacement streak)
i was only just using the cards inside the phone, and it even worked well as a usb storage device in windows when i connected the mobile on usb, only after i went to the recovery screen did this happened, (the 1st card failed after i went to the fastboot screen now that i remember correctly) do you think that any of these actions could have damaged the card?
and is it even possible for a normal streak to even damage the card beyond repair just by rebooting and trying to flash an update?
if that were the case, i guess loads of ppl would have same problem as me ...
other than that the mobile works flawlessly, hence my reluctance to send it back, plus the fact that it worked fine during this week with an 8GB card... but then again .. what are the odds of 2 cards failing one after the other in similar circunstances... sigh...

Elusivo said:
ok, been trying a bunch of bad blocks recovery programs, mbr fix programs, etc, none works so i guess the card is unrecoverable and is really physically damaged...
just 2 questions before i decide if i buy a new card or send the phone back to shop (it'll hurt having to wait 2 or 3 weeks for a replacement streak)
i was only just using the cards inside the phone, and it even worked well as a usb storage device in windows when i connected the mobile on usb, only after i went to the recovery screen did this happened, (the 1st card failed after i went to the fastboot screen now that i remember correctly) do you think that any of these actions could have damaged the card?
and is it even possible for a normal streak to even damage the card beyond repair just by rebooting and trying to flash an update?
if that were the case, i guess loads of ppl would have same problem as me ...
other than that the mobile works flawlessly, hence my reluctance to send it back, plus the fact that it worked fine during this week with an 8GB card... but then again .. what are the odds of 2 cards failing one after the other in similar circunstances... sigh...
Click to expand...
Click to collapse
I feel your pain man. I just got mine yesterday from my local best buy. Within the first 6 hours it shut down randomly while idle. Had to connect it to a power supply and then reboot it to get it started again. On top of that, after the random shutdowns, the phone wouldn't recognize the sd card. It came up on error in the notifications. It gave the option to reformat it right in the streak but when you clicked on reformat...nothing happened. Could write to the card at all. No pictures, music...nothing. So I returned it the same day I bought it and exchanged it for another.
My replacement streak has been perfect (besides my noob experiment in flashing steve's froyo)!
I'm pretty sure it was a hardware issue. It sounds like you got a faulty streak as well. My advice would be to send it back...ask for expedited shipping or whatever it takes to get it back asap. These things are too expensive for them not to work as promised.
Good luck bro!

Try here http://www.sdcard.org/consumers/formatter/ & see if you can reformat the cards
worth a try

[Q] WP7 keeps rebooting

I come from magldr 1.12 and I installed 1.13, after that I went straight to usb flasher and flashed a new rom but it keeps bootlooping, starting over and over again. anyone had this problem too? maybe some tips?
if it doesn't work after five more flashes, I'll put it back to stock first

HectiQ said:
I come from magldr 1.12 and I installed 1.13, after that I went straight to usb flasher and flashed a new rom but it keeps bootlooping, starting over and over again. anyone had this problem too? maybe some tips?
if it doesn't work after five more flashes, I'll put it back to stock first
Click to expand...
Click to collapse
which new rom?, i'm running Moon and it occasionally reboots randomly.
Very intermittent and not constantly like yours by the sounds.
I'm also on MAGLDR 1.13

HectiQ said:
I come from magldr 1.12 and I installed 1.13, after that I went straight to usb flasher and flashed a new rom but it keeps bootlooping, starting over and over again. anyone had this problem too? maybe some tips?
if it doesn't work after five more flashes, I'll put it back to stock first
Click to expand...
Click to collapse
same thing happened to me...i jus went into tha magldr menu and shutdown..started it right back up and never had tha problem again

igrind2 said:
same thing happened to me...i jus went into tha magldr menu and shutdown..started it right back up and never had tha problem again
Click to expand...
Click to collapse
Thanks was worried when this started happening but that fixed it

igrind2 said:
same thing happened to me...i jus went into tha magldr menu and shutdown..started it right back up and never had tha problem again
Click to expand...
Click to collapse
thanks guys, I was having the same problem, and that little trick worked for me also. cheers
bahardman

hmm, I found the problem, I bought a new SD card today, this one is compactible, older SD cards aren't..

i would try a differnt sd card i havent had a single problem with wp7 since i flashed first time

Same here I have this problem with a Sandisk Class2 16GB restarting every 5 min or so tried everything formatted reformatted and nothing If I keep playing with the phone is no problem is look and unlock the screen normally but when is going in sleep mode by itself I can't start-it again everything is dead buttons lights don't came up, I give up and install a Sandisk class2 8GB no problems at all everything fine and no more restarting which led me to think not all the cards are good with WP7.

georo said:
Same here I have this problem with a Sandisk Class2 16GB restarting every 5 min or so tried everything formatted reformatted and nothing If I keep playing with the phone is no problem is look and unlock the screen normally but when is going in sleep mode by itself I can't start-it again everything is dead buttons lights don't came up, I give up and install a Sandisk class2 8GB no problems at all everything fine and no more restarting which led me to think not all the cards are good with WP7.
Click to expand...
Click to collapse
its the same with my sandisk 16gb class2 version 2011 have unfortunately the new version

I am using a Kingston class 4 16gb card and mine keeps restarting and the mgldr 1.13 shutdown wont fix it. I also tried kingston class 4 8gb sd card and a hc class 6 4gb sd card with the same results, all of them just keep booting up over and over again. Help

HectiQ said:
I come from magldr 1.12 and I installed 1.13, after that I went straight to usb flasher and flashed a new rom but it keeps bootlooping, starting over and over again. anyone had this problem too? maybe some tips?
if it doesn't work after five more flashes, I'll put it back to stock first
Click to expand...
Click to collapse
Your phone is the problem, It happened to mine and I went back to android, kept rebooting, then went back to 6.5 and it kept rebooting, turns out if it does that its a hardware problem and you have to RMA....

HectiQ said:
hmm, I found the problem, I bought a new SD card today, this one is compactible, older SD cards aren't..
Click to expand...
Click to collapse
nothing todo with how old it is, its todo with random read/write speeds, for instance, most newer cards with high class values like 6 or 10 use some odd mechanics that increase sequential speeds but lower random speeds, that is the issue, if the card at any point isnt able to give the spec needed then it has issues, in some cases its only minor in others it wont even be detected.
pteradactyle said:
Your phone is the problem, It happened to mine and I went back to android, kept rebooting, then went back to 6.5 and it kept rebooting, turns out if it does that its a hardware problem and you have to RMA....
Click to expand...
Click to collapse
evidently not, op stated the SD card was the issue and is now fixed when he replaced it.

interesting - I've now tried two WP7 ROMs on my UK HD2 - LEO70 and XBmod-WP7-V1.04b, with MAGLDR1.13 and 2.08.HSPL and 2.15.50.14 radio and got stuck in a boot loop with both.
The only thing that's fixed it was removing the SIM and both worked fine with any SD card I try. Doesn't make for a great phone though.....
Anyone got any thoughts?
EDIT - turns out it was my old T-Mobile SIM that was the problem. Have since tried two newer SIMs and both work fine with no bootloop!

dazza9075 said:
nothing todo with how old it is, its todo with random read/write speeds, for instance, most newer cards with high class values like 6 or 10 use some odd mechanics that increase sequential speeds but lower random speeds, that is the issue, if the card at any point isnt able to give the spec needed then it has issues, in some cases its only minor in others it wont even be detected.
evidently not, op stated the SD card was the issue and is now fixed when he replaced it.
Click to expand...
Click to collapse
hmm well sd card or not, FYI if your phone is overheating i suggest you revert to 6.5 immediately.

pteradactyle said:
hmm well sd card or not, FYI if your phone is overheating i suggest you revert to 6.5 immediately.
Click to expand...
Click to collapse
lol whats with these bold statements?
how do you know its overheating? where did the overheating comment come from? the OP didnt say as anything to the sort
you cant assume that because you have had or have read about an issue with overheating which produces these symptoms that every time a phone does the reboot thing has the same issue
however lets take it out of context, yes if you have an overheating device for a along period of time then its not going to be good, but heavy usage of the device, heavy WIFI or HSDPA usage will all make the phone rather warm, charging the battery will make it warm, if your device gets too warm it may just crash, which happens in 6.5 as well.

Hmmmmmm ?
Can I just say that I think this forum is absolutely amazing... I managed to get my HD2 running windows phone 7 in only about an hour...
I too also have this issue, but at the moment I have taken the memory card out and just reading away here.... now am not a newbie when it comes to technology, just a newbie when it comes to this forum lol
Judging with what has been said the Memory Card used in the Windows Phone 7 needs to have fast enough random access memory in order for it to operate with the phone (As If it was Solid State Memory in the actual phone)
So... having read as well from georo - I give up and install a Sandisk class2 8GB no problems at all everything fine and no more restarting which led me to think not all the cards are good with WP7
So I am now going to take a wee journey out tonight to try and find a memory card similar to what georo has said... a Class2 8GB Sandisk...
If I too can get it working with this card then we could maybe begin a small list that works with WP7 on HD2

grant190492 said:
Can I just say that I think this forum is absolutely amazing... I managed to get my HD2 running windows phone 7 in only about an hour...
I too also have this issue, but at the moment I have taken the memory card out and just reading away here.... now am not a newbie when it comes to technology, just a newbie when it comes to this forum lol
Judging with what has been said the Memory Card used in the Windows Phone 7 needs to have fast enough random access memory in order for it to operate with the phone (As If it was Solid State Memory in the actual phone)
So... having read as well from georo - I give up and install a Sandisk class2 8GB no problems at all everything fine and no more restarting which led me to think not all the cards are good with WP7
So I am now going to take a wee journey out tonight to try and find a memory card similar to what georo has said... a Class2 8GB Sandisk...
If I too can get it working with this card then we could maybe begin a small list that works with WP7 on HD2
Click to expand...
Click to collapse
From my readings, it's NOT a matter of speed of the SD card. Although, a class 2 card is pretty slow...you should consider at least a class 4 or 6.
But, I digress, the issue with the rebooting has to do with the compatibility of the SD card and WP7. For some unknown reason, people have had to try a hit-or-miss approach to finding a SD card that works.
I have been fortunate that my 3C Pro 16GB Class 6 card worked right off the bat. And you might want to read up on the meanings and speeds of the various SD Class designation before spending money on a Class 2 card.

pteradactyle said:
hmm well sd card or not, FYI if your phone is overheating i suggest you revert to 6.5 immediately.
Click to expand...
Click to collapse
Really? I guess I better revert back to WM6.5 since my perfectly running WP7 installation makes my phone get really warm during heavy usage!!!
LMAO!!!

hjhjhj said:
From my readings, it's NOT a matter of speed of the SD card. Although, a class 2 card is pretty slow...you should consider at least a class 4 or 6.
But, I digress, the issue with the rebooting has to do with the compatibility of the SD card and WP7. For some unknown reason, people have had to try a hit-or-miss approach to finding a SD card that works.
I have been fortunate that my 3C Pro 16GB Class 6 card worked right off the bat. And you might want to read up on the meanings and speeds of the various SD Class designation before spending money on a Class 2 card.
Click to expand...
Click to collapse
Ok thanks for the reply dude... as I have said I will need to get upto speed with this stuff... at the moment I have a standard SanDisk 2GB MicroSD... so suppose if I do go and buy a class 4-6 it will be money well spent anyway as I can always revert back to the old WM6.5 ... or just claim it didnt work and take it back...
Just on a wee note... I noticed that the HD7 which is pretty much the same phone runs on a Class 2 MicroSD (http://forum.xda-developers.com/showthread.php?t=883582)
Surely this should work?

also on this note... the card that comes out of a Stock 8Gb HD7 is a 8Gb Sandisk, Class 4...

[Q] Phone freezing/rebooting

Ive tried several WP7 NAND builds in this forum but everyone seem to give the same issue far as it randomly freezing and rebooting especially when the screen is off, Is anyone else having this issue and if so is there a solution?
Phone: TmoUS Leo
Radio: 2.15.50.40
Build: Frantic HD WP7

Yes ive had this same problem...would also like to know if there are any solutions...thanks

Try another SD card. Go for a SanDisk one as they are more compatible. WP7 doesn't accept many SD cards and you both have the typical symptoms of an incompatible card

mtippet said:
Ive tried several WP7 NAND builds in this forum but everyone seem to give the same issue far as it randomly freezing and rebooting especially when the screen is off, Is anyone else having this issue and if so is there a solution?
Click to expand...
Click to collapse
Yes, and yes.
Random reboots are most likely caused by your MicroSD-card (WP7 will not work well with some cards). The only solution: try a different card.
There's a thread where people report which cards worked for them here.

ignore that thread
There is absoluetly no way of know what card will work.
statistically you have a better chance with a sandisk class 2 or 4 BUT that is not always the case, you may have a generic home brand class 10 that works but more likely you'll have better luck with those class 2 and 4 cards
No one is really sure why WP7 is having issues, the best idea so far is that its random read/write speeds that are the key, some class 10 cards have massive sequential write speeds but slower random reads which is where WP7 comes unstuck
Also, just because some one has a sandisk 8GB class 6 that works fine doesnt mean you will have the same luck with the exact same model because different cards use different components, even within the same make and model.
For example i have two 4GB sandisk class 6 cards, purchased on the same day at the same shop, both cards are model identical, one works fine the other has issues such as restarting, wifi not working and lagging
and to throw another spanner in the works i have a card that works perfectly, up until i fill the card to a certain point, then it starts all this restart business, if i dump a few hundred MB of music on the card taking it past that point it works fine . The card was been tested on the PC and i cant see anything wrong with it.
So, that leave me to think that for some reason when WP7 was trying to access that portion of the card for SYSTEM usage it was perhaps too slow to use or had some other issue, i can play music from that area however.

I just installed WP7 on my HD2 earlier today, was running fine for about.. 3-4 hours, I guess I was on it a good bit, not really letting it go to sleep for an extended period of time, but after I stopped messing with it, I noticed it rebooted itself, then it got froze on the lock screen, until it rebooted itself randomly again,, and then it did a complete wipe of my data on another random reboot?
Is this due to the SD card?
And can I just remove the SD card to fix this until theres some guarenteed cards that work with WP7?
or will it not boot without the SD card in?
Thanks alot.

it will work without SD but laggy and you will only have about 150MB of space.
good luck waiting for a card, its supposed to be unremovable so i doubt you will see over the counter products, im afraid its take a guess or buy an HD7
oop! yeah probably your SD

It is your sd card, sorry. Try a new one.

so nothing to do with how you format the sd card?

The guidelines
Welcome to the club!! u will soon get an error message umm in few weeks! then u will search.. u will undo hspl and all the things(sd card method even u will buy a new sd).. atlast it will kepp freezing.. the search and search... same omitted answers!! one fine day reboots then says!!!
ARM11 FATAL ERROR
FLASH_OS_WM.C LINE 582
or some other line ur search and search will end with 2 result and redfly..
http://forum.xda-developers.com/showthread.php?p=11515140
http://forum.xda-developers.com/showthread.php?p=8838597
after this what i did
I LOGGED ON TO WWW.HTC.COM
SEARCHED FOR HTC AUTHORIZED SHOP IN MY TOWN
PLACED IT FOR REPAIR
Good thing :THEY JUST TOOK MY PHONE..U WILL GET BATTERY,SIM AND SD BACK!!
STILL WAITING TO GET IT REPAIRED!!!!
The best thing: u can use the phone without repairing.. but if ur chatting with ur GF ON FONE more than 3 min or recording a video it jusT reboots and hangs!!never boots back still its cold.. solution: buy an Air conditioning unit remove the battery cool it.. it will boot!!

the WP7 doesn't format the SD in options menu.
I tried this soluction and the phone appears more stable:
1- go in the
(caution----your data will be eraser)
settings -> about -> reset your phone
2- then the phone reset and after the MALGRD screeen push VOL UP and VOL DOWN
to appears the screen when you press the VOLUP to eraser all data and recovery the phone in factory status.
3- after this the phone start with the SD clear.
my phone don't freeze more after this steps.