Database Users

"usb device not recognized" with two diff. win7 installations.

as title states.
It doesn't seem to be the samsung drivers
as I have uninstalled and reinstalled.
but the Android drivers. I have no Android drivers installed anymore
(the 3 of 4 that installs)
therefore i lose adb connectivity
*This has happened on 2 different Windows 7 installations. (switching between 2 different hdds, on this laptop)
I have usb debug on ofcourse.
I have uninstalled reinstalled latest samsung drivers.
I have installed pdanet drivers.
I have turned off phone, while connected then boot up. still no fix.
I am using acs froyo dk17. But this happened with dk05 as well.
Is there a fix for this?

I've had this problem twice. The way I fixed it was to wipe the sd card. Its a pain but that's what fixed it
Sent from my SPH-D700 using XDA App

If not a driver problem (doesn't sound like it is) the next *usual* suspect would be the usb cable. The samsung cable that shipped with these phones is crap. I got a 6' belkin one on amazon for $8 that has worked flawlessly.

Make sure you're not using a USB port that's on a hub or daughtercard. It should be one that's directly on the motherboard.

I kept fiddling with settings and rebooting both phone and computer and got past this once on my old win7 box. On my new one, I got nowhere after an hour or so. Worked first thing with the same cable on my win xp machine.
Plug your phone into a USB1 only hub, or on the same channel as a usb 1 keyboard or mouse and it will detect just fine... it won't really be useful because it won't be able to flash still (I believe it should detect as a composite device with several facets and only some of those are usb1-only compatible). I believe that the underlying problem is a bad implementation of the usb spec on one of the usb2 only parts, but I didn't feel like digging any deeper. I might try a win xp vm on the same physical hw to see if I can narrow it down to a win7 usb2 + device usb2 compatibility issue. Might be worth making sure our win7 patches are up to date, too.
Sent from my SPH-D700 using XDA App

Thanks for the replies guys.
The usb trick won't work because it's a laptop. And I tried all four of them. I only have windows 7 machines. One being a ultra sff and has like 12 usb ports. It hasn't failed me yet, but happens on the laptop.
It wouldn't hurt to get another cable, a longer one. And my sd is maxed out, I will pull it instead of format.
Thanks all
Sent from my SPH-D700 using Tapatalk

I had this problem. Plugged into the back instead if the hub and reinstalled everything. Now it's working like a charm on all usb ports. Really odd problem.
Sent from my SPH-D700 using XDA App

I had this problem. I was using a USB extension cable that was a bit long. All the other phones and USB devices worked fine with it. EPIC did not want to. I got the impression that EPIC needs more power from the USB port than most of these other devices. For me, skipping the USB extension cable did the trick. I also used a powered USB hub and that worked well too. You might want to try different USB ports. Some may provide more power than others. Also try a powered USB hub (some are built into monitors) if you have access to one.

I had the same issue with my laptop as well. It is most likely the cable. The samsung one is crap. I tried every port and installed the usb drivers a dozen times with no success. Used the cable from my wifes blackberry and worked on the first try. Just pick up a new cable. Try monoprice.com they have awesome deals.
Sent from my SPH-D700 using XDA App

I just had this problem, I switched my cable and then it worked fine.

hayabusa1300cc said:
as title states.
It doesn't seem to be the samsung drivers
as I have uninstalled and reinstalled.
but the Android drivers. I have no Android drivers installed anymore
(the 3 of 4 that installs)
therefore i lose adb connectivity
*This has happened on 2 different Windows 7 installations. (switching between 2 different hdds, on this laptop)
I have usb debug on ofcourse.
I have uninstalled reinstalled latest samsung drivers.
I have installed pdanet drivers.
I have turned off phone, while connected then boot up. still no fix.
I am using acs froyo dk17. But this happened with dk05 as well.
Is there a fix for this?
Click to expand...
Click to collapse
Also make sure your antivirus is off although that's likely not the culprit. Do you install the drivers as administrator?
Try a new cord. If that doesn't work, try deleting/uninstalling the device and/or hub from the device manager - plug the phone in, letting win7 do its worst by not recognizing it, then open the device manager and find the usb hub. try deleting/uninstalling. unplug the phone and scan for hardware changes. I think this may force windows to reinstall the drivers for the usb hub. Disclaimer, it's been a while since I spent significant time fooling with windows computers so take this advice at your own risk - I'm feeling my way like an old man with cataracts trying to find his way around his long-lost childhood home. in the dark. With unfamiliar furniture. In an earthquake. While in a wheelchair. With flat tires....
My computer did this for a while and now it doesn't although it's certainly possible I changed the cord I was using.

The best way to get drivers to work is install PDAnet IMO..
I had driver problems upon driver problems.. swapped cables, etc.
went through all the motions that you all are describing here and what fixed it for me was installing PDAnet. Worked like a charm.
Hope this helps.

I agree about using pdanet for drivers. Unfortunately this problem isn't with the driver not being installed correctly. I got it on one machine and not another, using the same friver. In fact I got it to work on the same machinewith the same driver ... just different ports (one was stuck in usb1/ohci nd worked, the usb2 port never worked on one machine and a usb1 port never worked on a different one).
Sent from my SPH-D700 using XDA App

warlar12 said:
I just had this problem, I switched my cable and then it worked fine.
Click to expand...
Click to collapse
This worked for me when I had the problem. This will be the second time I had a usb cable go bad on me. Maybe I shouldn't buy those cheap ones from China...

I've had this problem with numerous cables on Dell E series laptops with 3 Epics and a Moment. For the life of me I couldn't get the phone to be recognized when using the USB ports on the left side of the machine. Plugged it into the ones on the right and have never had a problem. I think with the Dells it's a low current issue on the left side ports. The shorter the USB cable the better off you'll be if it is a low current problem.

thanks but i did alot of that last night and today, uninstall/reinstall drivers, usb hubs.. nothing
i may need to try another cable because i am workign on a friends epic sunday.
bilestoad said:
Also make sure your antivirus is off although that's likely not the culprit. Do you install the drivers as administrator?
Try a new cord. If that doesn't work, try deleting/uninstalling the device and/or hub from the device manager - plug the phone in, letting win7 do its worst by not recognizing it, then open the device manager and find the usb hub. try deleting/uninstalling. unplug the phone and scan for hardware changes. I think this may force windows to reinstall the drivers for the usb hub. Disclaimer, it's been a while since I spent significant time fooling with windows computers so take this advice at your own risk - I'm feeling my way like an old man with cataracts trying to find his way around his long-lost childhood home. in the dark. With unfamiliar furniture. In an earthquake. While in a wheelchair. With flat tires....
My computer did this for a while and now it doesn't although it's certainly possible I changed the cord I was using.
Click to expand...
Click to collapse

It HAS to be the power differences NOT cable.
Same cable as I charge with, plugged into the front of the computer (hub).
Plugged into the back of the computer recignized the first time.
=USB power

In my case, tried several micro USB cables, no dice. Tried my laptop and desktop, no dice. Tried USB hub or direct to PC usb ports, no dice. Device manager shows the right comm port but all the one-click roots i've tried can't find the phone. USB storage has never mounted for me from day one either.
Sigh, never had this issue with any other Android phone.

Finally figured out my issue. I had set it to "modem" while doing something else in an epst menu rather than "pda". Since I corrected that, works dandy.
I feel so stupid.
Forgive My Brevity. To Be Or Not To Be...

Would using my friends droid x cable work with the Samsung epic?
Sent from my SPH-D700 using XDA App

[Q] My phone won't connect on USB to computer, but my wifes Epic will

I have a Samsung Epic 4g rooted with the one click 2.5 and I upgraded to Froyo.
I had to use my wifes phone to copy the update.zip to my sd card because my computer would not let me see my epic. Same computer, cable and model phone works fine for my wifes.
I need to reinstall the one click root and can not get my computer to see my phone.
Is there a way I can root on the phone without using the computer.
So close to done, but I can not use the wifi tether without re-root

Different phones can be more finicky. No valid explanation why though.
Make sure you plug the cable into the phone first, then the computer. Try using different USB ports. If all else fails, try another cable.
I have seen a bad port on the phone before, but it had charging issues as well.

Superbovine said:
Different phones can be more finicky. No valid explanation why though.
Make sure you plug the cable into the phone first, then the computer. Try using different USB ports. If all else fails, try another cable.
I have seen a bad port on the phone before, but it had charging issues as well.
Click to expand...
Click to collapse
I have tried all the ports on my laptop. The phone acts like it is connecting. Even brings up the new usb connection icon but can not see the phone or sd card on my phone. USb debugging tried on and off.
No problem charging. I have tried various usb cables also and different computers

That is pretty wierd.
Do you have a different computer to check?

I'm having the same issue, but it isn't constant. I spent hours last night reinstalling drivers, different cables, debugging on-off. I go back to stock and try and it works fine, I install clockwork3 and ext4 with TrulyEpic and it does the same thing. Though sometimes it works. I found that my port is a little loose, cause when I move it to one side it looses connection. I think we may need to contact Sprint and get a replacement phone. I really want a brand new one, cause I didn't pay for a refurb, and really dont want one.

Superbovine said:
That is pretty wierd.
Do you have a different computer to check?
Click to expand...
Click to collapse
yes 4 computers 2 with Windows 7 and 2 with Xp

Djarett088 said:
yes 4 computers 2 with Windows 7 and 2 with Xp
Click to expand...
Click to collapse
Sounds like something is up with the phone, man. The only commonality is the phone.
Especially if you couldn't access it before the flash to 2.2 either.

duh. It's already been scientifically* proven that phones perform better for women because they are often carried (snuggled) in the women's bra. See here...
http://forum.xda-developers.com/showthread.php?p=10512579#post10512579

I find my USB very finnicky on my phone connecting to my windows 7 computer,I've gotten used to just using File Expert to wirelessly manage my SD card.

Driver Installation Issues

I am trying to install the Samsung Intercept (Virgin Mobile) on my Windows 7 netbook. I could never connect the device before to either WinXP or Win7. I recently factory reset my phone and after installing the drivers on WinXP, the phone showed that it was connected. I mounted the SD card to the computer and it never showed the drive. I unmounted and disconnected and since then it never connected. I keep getting that it's not recognized.
On my Win7 computer, I installed the drivers (had to force Windows to find the driver). Now the computer senses that it's connected, but it says "the device cannot be started". So I'm thinking that my P.O.S. phone can't figure out wtf USB mode is. It showed it once and that's it.
I've tried probably 3 or 4 different drivers and now I can't figure out how to just start clean. I don't even think I need to because the computer driver installed fine (It says Samsung USB Android whatever when it's connected). I tried with USB debugging on and off.

I even tried to make a virtual Windows XP to try it on a fresh install, but VM won't take unknown USB devices.
I uninstalled all my drivers, even the USB hub drivers, rebooted after the uninstall. No luck.
Before I reinstalled the hub I tried to force XP to the drivers (different ones not the same driver over and over) and now its saying "the file does not contain any information about this device". WTF?!
I'm so confused with this stupid driver that I can't take it anymore. I'm now considering reformatting my computer, but it's not worth it just to root a phone. I'd rather put up with my phone needing a battery pull at least once a day than to lose all my files.

caderyn19 said:
I am trying to install the Samsung Intercept (Virgin Mobile) on my Windows 7 netbook. I could never connect the device before to either WinXP or Win7. I recently factory reset my phone and after installing the drivers on WinXP, the phone showed that it was connected. I mounted the SD card to the computer and it never showed the drive. I unmounted and disconnected and since then it never connected. I keep getting that it's not recognized.
On my Win7 computer, I installed the drivers (had to force Windows to find the driver). Now the computer senses that it's connected, but it says "the device cannot be started". So I'm thinking that my P.O.S. phone can't figure out wtf USB mode is. It showed it once and that's it.
I've tried probably 3 or 4 different drivers and now I can't figure out how to just start clean. I don't even think I need to because the computer driver installed fine (It says Samsung USB Android whatever when it's connected). I tried with USB debugging on and off.
Click to expand...
Click to collapse
I had the same issue too.
Have you tried using another USB cable? If you're using the cable that came with the phone it wont work (well sometimes). What you can do is find or buy another Micro USB cable for your intercept. You can buy one off amazon for less than $10. I brought mine from Best buy for $20. It works fantastically.

scream4cheese said:
I had the same issue too.
Have you tried using another USB cable? If you're using the cable that came with the phone it wont work (well sometimes). What you can do is find or buy another Micro USB cable for your intercept. You can buy one off amazon for less than $10. I brought mine from Best buy for $20. It works fantastic.
Click to expand...
Click to collapse
I was seriously considering another cable because I read in some other threads pretty much what you just told me, but I guess I was one of those "on the twelth time it finally connects" type of situations. I connected it last night and it worked. Just need to update my SDK stuff, make sure I have all my info for SuperOneClick, and cross my fingers lol!
Thank you for your advice. If it stops working I'm gettilng a new cable.
[EDIT] and it stopped working... I knew I should've just rooted when I had it connected, but I wanted to back my stuff up. Looks like I'm getting a new cable lol.
Sent from my SPH-M910 using Tapatalk
[EDIT] You were totally right! It's the cable. I got a Belkin for $15 at Target. I plugged it in and immediately Windows 7 Pro 32-bit detected the drivers, the handset, and installed it. Now time for rooting

I know it's been a couple of months, but I'm curious if you've had any other problems with connecting?
I was having the same problem and I had a few cables that I tried with no luck. I also tried my wife's Blackberry cable, which is a thicker cable that claims to be a "DATA" cable...no go.
I probably will just go buy the Belkin one you referred to if you've had no other problems.
Thanks!
-- Sent from my Galaxy Tab using Tapatalk

GreyCelt said:
I know it's been a couple of months, but I'm curious if you've had any other problems with connecting?
I was having the same problem and I had a few cables that I tried with no luck. I also tried my wife's Blackberry cable, which is a thicker cable that claims to be a "DATA" cable...no go.
I probably will just go buy the Belkin one you referred to if you've had no other problems.
Thanks!
-- Sent from my Galaxy Tab using Tapatalk
Click to expand...
Click to collapse
I actually have had no problems (on my Win7 PC) since the install. As for my XP computer, I just gave up on trying to get it to work. Try completely uninstalling every instance of the Samsung programs (I went through my registry *dangerous*) and all things Android and reboot to a fresh power cycle (like with the phone) so Windows can update all its important files reguarding the driver removal. Then install and THEN plugin.
It literally randomly worked for me. I had the drivers installed properly, but the charging cord gave me "bad driver install". I didn't change a thing and plugged in wth the Belkin and was good to go.
Hope you can get it working! I know the anticipation of phone modding, and I love it! Lol!
Sent from my SPH-M910 using Tapatalk

Ditto, ditto and ditto! I have the same thing with my intercept, except I started on win7/64, could not get anything going. Then created an XP VM - over my dead body - no go.
Using the same cable, if I plug in my Captivate, everything comes up.
For you guys, when you bought a different cable, what did you buy? micro-to-micro USB? Or something else?
J

I usually use the cables that came with my HTC phones. Also I have better luck if I reboot the phone prior to connecting it to the PC.

Question for those that use Odin

Hey all. What kind of USB cable do you? I cant get my recignized by Odin. Ive tried every port on my computer, restarted phone computer, took battery out of phone and it still wont connect. I think its the cable. So can anyone guide me to one that will work? Thanks

Just buy a Blackberry cable they are very thick and nice but any other type of Micro usb cable works better than the stock one ...

Just curious, have you installed the phone drivers on your PC?
Sent from my SPH-D700 using XDA App

Yes I have. 3 out of the 4 installed fine.

I use a blackberry cable. Never had an issue
Sent from my SPH-D700 using XDA App

You might even be able to get a Sprint store to exchange your crappy Samsung cable for the Blackberry one if they have one. It might take a little convincing, but most stores will have a small stockpile of cables from return phones, and if you explain to them that you have read online that the blackberry one works better for data transfer, they will probably exchange it.
I've also used the Palm Pre cable, and it worked fine as well.

Maybe I'm lucky, but I've had no problems with the cable that came with my epic.

HTC cables work well... like the one that comes with the EVO

I use the cord from my old Samsung Moment, It actually came with a separate USB Data cord. I think just about any cord will be better than the ones that shipped with the Epic.

I've always used my epic USB. Is ur phone disconnected from the PC before u enter download mode... if so try resetting ur PC, opening Odin, putting your phone in dl mode, than connecting the USB to your phone
Sent from my SPH-D700 using Tapatalk

Using an ecomoto cable off of a cliq 2... Never gave me a problem.

My Galaxy S4 won't stay connected to the computer via USB

Hey all. Just got my Galaxy S4 today and I was loving everything about it until... right now. For some reason, the darn USB won't stay connected to the computer. It doesn't matter if it's simply plugged into the computer as an "installer" or as a media device. It'll constantly disconnect and reconnect itself, even when I'm not transferring any files.
It's not the my computer/USB ports, either, since I can transfer files between my HTC Thunderbolt and Nexus 7 fine. I've also tested 2 other USB cables and they all behave the same way.
Anyone know what's going on? Did I get a lemon?

No im in the same boat. Was trying ti connect in today. I reinstalled and un installed the drivers about 4 times. Tried un selecting usb debugging in developers menu. Installed kies and used the drivers from it still no good. Used 3 different usb leads. Phone will still charge from pc and even when im installing the drivers again and connect the phone it will say that your new device is ready to use but still cant access phone, it simply does not show up.
Wouldn mind was working 2 days ago fine. Same usb port and all. And the port is fine cause my old s3 still reads from the same port.

snwman said:
No im in the same boat. Was trying ti connect in today. I reinstalled and un installed the drivers about 4 times. Tried un selecting usb debugging in developers menu. Installed kies and used the drivers from it still no good. Used 3 different usb leads. Phone will still charge from pc and even when im installing the drivers again and connect the phone it will say that your new device is ready to use but still cant access phone, it simply does not show up.
Wouldn mind was working 2 days ago fine. Same usb port and all. And the port is fine cause my old s3 still reads from the same port.
Click to expand...
Click to collapse
same problem with me!
every thing ok with s3 but the problem only with s4
please we need help to solve this problem!

Same problem
I have also been dealing with this for a while now. I have Windows 7 64bit and I have reinstalled the drivers many times through Kies and manually. It seems like the problem is getting worse since initially I could do some file transfer through usb if i fiddled with the device (changing usb ports, unplugging it, etc). Now I am hard pressed to get it to show up on the computer through MTP at all.
This is quite annoying since I am developing an android app and I need a usb connection in order to test it. A fix would be awesome.

I just tested on my sister's laptop and it doesn't have this problem. I clicked around the phone, transferred a 10gb movie, and left it plugged in to see if there were any signs of disconnects. None whatsoever. Odd. Maybe Galaxy S4 just doesn't like something with our computers. This is quite annoying.
I have a fresh Windows 7 64-bit partition I installed the other day so I'll test it out on that and report the results later today.

retsnom said:
I just tested on my sister's laptop and it doesn't have this problem. I clicked around the phone, transferred a 10gb movie, and left it plugged in to see if there were any signs of disconnects. None whatsoever. Odd. Maybe Galaxy S4 just doesn't like something with our computers. This is quite annoying.
I have a fresh Windows 7 64-bit partition I installed the other day so I'll test it out on that and report the results later today.
Click to expand...
Click to collapse
I do same thing, it is worked in another computer.
I am already put fresh win 7 but still same problem..

im on xp(retro yeah ha ha) but just a pc i have for my phones and stuff. But i got it working again by flashing my firmware through odin and its back working. Im blaming when i rooted it that it broke but ill see if it happens again
edit: Can confirm pc is now picking up phone. I just flashed the most recent stock rom for my carrier through odin and as soon as it finished updating its prefect now. Might wait another while to root it now and wait for more devs to jump aboard for more roms

snwman said:
im on xp(retro yeah ha ha) but just a pc i have for my phones and stuff. But i got it working again by flashing my firmware through odin and its back working. Im blaming when i rooted it that it broke but ill see if it happens again
edit: Can confirm pc is now picking up phone. I just flashed the most recent stock rom for my carrier through odin and as soon as it finished updating its prefect now. Might wait another while to root it now and wait for more devs to jump aboard for more roms
Click to expand...
Click to collapse
I'm on stock, no root.

Hi
I don't know if it may help but i noticed the usb doesn't work when the phone is locked.
I did check 'stay active while charging' in dev parameters and i never got disconnected again.
Sent from my GT-I9505 using xda app-developers app

Tested it out on a fresh copy of Windows 7 and it still continuously disconnect. What gives?

taargaa said:
Hi
I don't know if it may help but i noticed the usb doesn't work when the phone is locked.
I did check 'stay active while charging' in dev parameters and i never got disconnected again.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
Oops, missed your post. Unfortunately, it disconnects regardless of the phone's state.

My friend's S4 was doing the same thing on his desktop. Every time he would try to transfer pics the phone would disconnect after a few files.
I tried different things from reinstalling drivers to trying to only copy over a couple of files at a time, nothing worked.
Finally I plugged his phone into one of the back usb ports and transferred over 2gb with no problem and no disconnects since.
My guess is the S4 is a power hog and some usb ports just don't supply enough juice. Try plugging it in to a usb port that comes off a motherboard. Don't use the front ports or usb hubs. Hope this helps someone.

dirrtpoor said:
My friend's S4 was doing the same thing on his desktop. Every time he would try to transfer pics the phone would disconnect after a few files.
I tried different things from reinstalling drivers to trying to only copy over a couple of files at a time, nothing worked.
Finally I plugged his phone into one of the back usb ports and transferred over 2gb with no problem and no disconnects since.
My guess is the S4 is a power hog and some usb ports just don't supply enough juice. Try plugging it in to a usb port that comes off a motherboard. Don't use the front ports or usb hubs. Hope this helps someone.
Click to expand...
Click to collapse
I've been trying all kinds of different combinations of USB leads, phone settings and ports all morning and was just about getting ready to start a new Olympic sport of S4 hurling when I came across this post and plugged my USB straight into the back of my machine and it finally works!! Thank you dirrtpoor for your input - a simple fix, but nevertheless it worked.:good:
I suppose it makes sense that a quad core 1.9Ghz phone would be a power hog.

It wouldn't work on my home PC whatever I tried. Front or back USB ports.
On my dads PC sometimes it would display OK and other times "usb device has malfunctioned" (didn't try the rear USB port)
On my work PC it works fine on the rear ports.

I was having the same problem a few days ago, but then I reformatted the SD card, now everything seems OK.
Even the stock gallery app works now...?!

Guys I was having the same problem. For the life of me I couldn't figure out why suddenly my S4 wasn't being recognized by my computer. I finally went into developer options and noticed a "USB Debugging - Debugging mode launches when USB is connected" was turned on. I de-selected that, connected my phone and now my computer recognizes it again. I hope that helps guys, it helped me.

Samsung S4 sync problem
mgrisan1 said:
Guys I was having the same problem. For the life of me I couldn't figure out why suddenly my S4 wasn't being recognized by my computer. I finally went into developer options and noticed a "USB Debugging - Debugging mode launches when USB is connected" was turned on. I de-selected that, connected my phone and now my computer recognizes it again. I hope that helps guys, it helped me.
Click to expand...
Click to collapse
This may be laughably obvious but I'm a former Apple user, which has it's own dedicated USB connector, so I forget sometimes with the Samsung S4, which has a standard (looking) micro USB connector that I need a USB cable that is enabled for syncing as well as charging...not all USB cords with micro connectors on the phone end will carry the data because I imagine Samsung has made their phone's connector require a different wiring in the cable.
I was pulling my hair out yesterday trying to figure out why the computer wouldn't see the phone..then looked at the USB cable and realized I'd plugged a non-syncing cable in. I tried the cable that came with the phone and bingo, worked like it was supposed to.
Hope this helps, sometimes it's the little things we overlook that drive us nuts.

Any way to connect in master storage with out root.
Sent from my GT-I9500 using Tapatalk 4

Use a different usb cable and usb port. I know it sounds stupid but there has definitely been phantom problems which were solved this way, even with something as simple as adb commands

i have same problem. trying all the way but always with the same result...