[Q] Help me guys! My nexus 7 doesn't restart. - Nexus 7 Q&A, Help & Troubleshooting

Hi guys,
Help me out, my nexus7 doesn't restart. I haven't rooted it and few days back it simply didn't restart. Every time i power on its shows google and than stuck to nexus logo blinking.
I tried to go to recovery mode but it doesn't work.
help me so that i am fix this problem. I am pissed off as this happend in a middle of a trip which let me in no where now.
Thanks guys in advance.

Have you try just turning it off completely? If you can't do this then plug the charger and let it sit there for a couple of hours to hold some charge on the battery. If this does not work open the back casing of the Nexus and unplug the battery and let it sit unplug for a few minutes and connected again. Before you attempt to turn on the tablet make sure you have the back cover on and then power on and see what happens. I'm sorry to hear this.

Giovanny said:
Have you try just turning it off completely? If you can't do this then plug the charger and let it sit there for a couple of hours to hold some charge on the battery. If this does not work open the back casing of the Nexus and unplug the battery and let it sit unplug for a few minutes and connected again. Before you attempt to turn on the tablet make sure you have the back cover on and then power on and see what happens. I'm sorry to hear this.
Click to expand...
Click to collapse
I can switch it off pressing Vol - with power button. I can get the bootloader screen and tried to go recovery mode but the screen get stuck.
I also did open the back cover but didnt find how to open the battery so didn't do much R&D and put it on.
Thanks

Than all I can think it must be an app that you install in the past couple days that has some virus.

All sorted out fine!
Thanks guys, all sorted out.
I didnt want to root it but guess Android sucks without hacks.
i used Nexus7 toolkit and unlock bootloader & root it. It did format my device but working as brand new.
Thanks again guys

Related

Bricked?

Editing this as I'm desperate for help and things have moved on since I first posted, below is where I am up to post 11 of this thread.
I flashed Vegacomb b (exe), it restarted but stayed on the warning about paying for vegacomb for 10-15 minutes which didn't seem right so I held power for 6 seconds and it turned off. After that it would never turn on or go into recovery (I know all the methods, none worked).
Today I unhooked the battery, when I plug the battery back in the screen comes on for a second but then it's as it was, unresponsive. HOWEVER, if I plug the mains in with the battery disconnected then it immediately tries booting but still sticks at the warning (left for over 20 minutes). If I plug the battery in while on this screen then remove the mains it stays on. The power button is unresponsive through this so I still cannot get into recovery.
Any more ideas that haven't been mentioned?
I've tried well over 100 times to get into recovery but it's not happening
anyone willing to have a go at fixing (cheaply!) if I send them it?
Original Post:
Hi guys, just managed to (re?) install Vegacomb (b, from exe), it restarted but stayed on the white screen with the warning text about paying for Vegacomb for over 10 minutes so I held down the power button to turn it off, now I cannot do anything to boot it up (tried holding power button down from 0.5 seconds to 60 seconds!), it also won't boot into recovery. Is there anything at all that can be done to get this going?
cheers
OK, I've tried holding down back while plugging in (fully charged btw), tried all variations of button presses with back and power, with and without USB, with and without power cable.
Only got until 10PM (UK time) to get this sorted (it's now 6PM) so any help/advise would be appreciated
Flash back to modded stock then try again.
From modded stock go app drawer and run recovery
From recovery wipe data, cache then go advance then wipe dalvik
Then press back
Then install zip from SD
Choose vegacomb from whatever directory on your SD you copied it to then confirm
If you ain't Got Vegacombe zip then download it.
Or you could run the .exe again but the above is my preferred method.
Also you might need to download modded stock v2 if you ain't already got it.
Good luck.
intel007 said:
Flash back to modded stock then try again.
From modded stock go app drawer and run recovery
From recovery wipe data, cache then go advance then wipe dalvik
Then press back
Then install zip from SD
Choose vegacomb then confirm
If you ain't Got Vegacombe zip then download it.
Or you could run the .exe again but the above is my preferred method.
Good luck.
Click to expand...
Click to collapse
??
the Vega won't turn on and won't go into recovery, cannot flash anything, nothing comes up on PC, tried all variations of the back and power buttons (inc back, plug in power & usb, press power, leave 2 seconds and release back) over 100 times. it's like it's dead.
the only thing it does is show a blue LED when I plug the power cable in
I've read that if you got less than 50 or 60% battery it wont go into flash mode (back button 2 seconds - power & back 2 seconds)
Have you got enough battery cause mine takes half a day to charge.
intel007 said:
I've read that if you got less than 50 or 60% battery it wont go into flash mode (back button 2 seconds - power & back 2 seconds)
Have you got enough battery cause mine takes half a day to charge.
Click to expand...
Click to collapse
100% (solid blue LED), been on charge for over 24 hours
I'm baffled mate, I've had same issue couple of times but after 10mins or so I've always got it to power back on.
Bricked
I've had the same problem and although quite drastic, remove the rear cover and unplug the battery connection (the multipin one with red and brown/black wires).
With the mains plug out,i found that if you press volume up and power with the wires unplugged and leav eit for a few mins then use back + power it will start as you need it to.
It may take a few tries but i have managed to do it following this procedure about 7-8 times.
Hope this helps.
DAve
I had trouble getting into recovery when the Vega was 100% charged (i.e. charge led was solid blue). When I let it discharge a little so it was flashing with the charger plugged in, I managed to get into recovery then.
dmarchant said:
I had trouble getting into recovery when the Vega was 100% charged (i.e. charge led was solid blue). When I let it discharge a little so it was flashing with the charger plugged in, I managed to get into recovery then.
Click to expand...
Click to collapse
I can't discharge it though as it doesn't turn on, left it 14 hours from last night, back at work again now and it still says fully charged
got the battery disconnected now to give it a try
Disconnected battery for around 10 minutes, put it all back together, still can't boot or get to recovery
EDIT: it works when the battery is disconnected (goes to the Vegacomb warning screen but no further, cannot power off or get to recovery still)
any ideas?
Anyone got any ideas?
it's meant to be unbrickable from what I've read so there must be a way around it but I'm out of ideas!
its user error. remeber to put it into recovery mode you need the power cable plugged into it too as well as usb.
slybunda said:
its user error. remeber to put it into recovery mode you need the power cable plugged into it too as well as usb.
Click to expand...
Click to collapse
Cheers, but its not user error. I'm not that stupid
Hi, this may not help but i had trouble flashing the stock rom because of the battery being fully charged, could only get the screen to light up so left it over night and then went through the normal routine and got into recovery.
Bill
Hi there
Just one question, how do you know for sure it hasn't gone into nvflash mode?
I know what you are going through trying to get the ruddy thing into nvflash, it's a mare if you don't quite get that timing right but seeing as the screen doesn't light up when it's in nvflash what is telling you whether you are actually in it, other than the screen coming on to say you are not or relying on a windows message?
As I said I had the same problems many a time but I use Audi tool now to tell me if nvflash has started, I got it off the Modaco forum, but when you are in nvflash it actually tells you so rather than relying on perhaps windows to tell you it has happened
If you haven't come across the audi tool before then just do a search for it on Modaco, I don't know if they have got it here on XDA.
mmace said:
Anyone got any ideas?
it's meant to be unbrickable from what I've read so there must be a way around it but I'm out of ideas!
Click to expand...
Click to collapse
wow, i'm quite surprised by the number of people who are taking their batteries out when they think there is a problem. You should never need to do this unless it is actually faulty.
Ok yes the Vega is nearly indestructible I have had my in a complete mess many times and have never had to do anything that hard to recover. Some times it will be a pain to get into nvflash mode but this can always be done just have to be patient and know a couple of tricks.
If you have tried the back button and then the power a few times and nothing there is another method.
Instead unplug the power then hold the back button down, whilst holding down the back button plug in the power release the back button after a couple of seconds (I like to count to 5)
I am hoping that you already have the USB cable connected and the right drivers installed on your PC.
Billy..
If you need more help head over to TabletRoms and look in the Vega forum (sorry XDA guys just there is a lot of other useful information there)
wks said:
Hi, this may not help but i had trouble flashing the stock rom because of the battery being fully charged, could only get the screen to light up so left it over night and then went through the normal routine and got into recovery.
Bill
Click to expand...
Click to collapse
I've tired fully charged and letting the battery drain for 40+ mins after it's been on the "warning" screen
mitt69 said:
Hi there
Just one question, how do you know for sure it hasn't gone into nvflash mode?
I know what you are going through trying to get the ruddy thing into nvflash, it's a mare if you don't quite get that timing right but seeing as the screen doesn't light up when it's in nvflash what is telling you whether you are actually in it, other than the screen coming on to say you are not or relying on a windows message?
As I said I had the same problems many a time but I use Audi tool now to tell me if nvflash has started, I got it off the Modaco forum, but when you are in nvflash it actually tells you so rather than relying on perhaps windows to tell you it has happened
If you haven't come across the audi tool before then just do a search for it on Modaco, I don't know if they have got it here on XDA.
Click to expand...
Click to collapse
I have Audi, I also have Device manager open, I know 100% it's never gone into recovery mode sine I started with this problem.
BillyFish said:
wow, i'm quite surprised by the number of people who are taking their batteries out when they think there is a problem. You should never need to do this unless it is actually faulty.
Ok yes the Vega is nearly indestructible I have had my in a complete mess many times and have never had to do anything that hard to recover. Some times it will be a pain to get into nvflash mode but this can always be done just have to be patient and know a couple of tricks.
If you have tried the back button and then the power a few times and nothing there is another method.
Instead unplug the power then hold the back button down, whilst holding down the back button plug in the power release the back button after a couple of seconds (I like to count to 5)
I am hoping that you already have the USB cable connected and the right drivers installed on your PC.
Billy..
If you need more help head over to TabletRoms and look in the Vega forum (sorry XDA guys just there is a lot of other useful information there)
Click to expand...
Click to collapse
TabletRoms has been no help for me, there's been no reply at all for my problem but there has here and at MoDaCo. I pulled the battery as a last resort as NOTHING is working, I've tried all the tricks at least 2 dozen times, some a hundred +, including the one you mention
Well I don't want to teach you to suck eggs, but I take it you did use Audi to delete and replace your drivers.
And then when powering on the Vega you held the back button for 2 secs and then the back and power buttons for 6 secs to get the Vega detected?
For me I can only see that there can only be 3 other possible causes
1./ the back button is broken on the vega
2./ The USB port on your PC or on the Vega has gone up the swanee
3./ The USB lead is no good
The Vega may be unbrickable but if the back button or the USB port has had it then .....
Yeah, tried it, cheers.

Major issue with my N7

Ok everyone I am having a major problem with my N7. This morning I noticed it was out of power so plugged i tin like normal, then I went to turn it on got the Google logo then it went to the Nexus logo. And it kept cycling through the nexus logo for hours and will not turn off. Whenever I try to turn it off it just restarts from the beginning. Now I didn't buy my tablet from the play store so I would have to go through Asus for a warranty replacement. Has this happened to anyone else in the past?
Some info. Stock, unrooted, locked bootloader, stock 4.2
Well this never happened to me before. Did you try removing the battery?
Well, to start, unplug your N7 from the power source and hold the power button down for about 15 seconds, this should force it off. From there, turn it back on and let us know what happens.
kitsunisan said:
Well, to start, unplug your N7 from the power source and hold the power button down for about 15 seconds, this should force it off. From there, turn it back on and let us know what happens.
Click to expand...
Click to collapse
Tried that, when i hold down the power button to turn it off it turns off then it turns itself back on and goes back ot where we have started. Also it has been unplugged now im waiting for the battery to die
Dark lord me said:
Tried that, when i hold down the power button to turn it off it turns off then it turns itself back on and goes back ot where we have started. Also it has been unplugged now im waiting for the battery to die
Click to expand...
Click to collapse
I don't see that you have tried holding down the power and the volume down. This should get you a hard reset.
Here is a short topic where a power and vol down worked for someone where a straight power down did not:
http://rootzwiki.com/topic/30101-reboot-tip/
it's the last post (#6)
Rather than trying to run the battery down, which is not all the way down when it shuts off and would take a long time to discharge just sitting there, you could pull the battery if you feel comfortable opening the case. It's not glued or anything and the battery has a ribbon connector.
So its in a boot loop? Reflash the image with Mskips toolkit option 9 after booting into fast boot mode. If that isn't the problem then do a warranty return. Not sure why you're stuck in a loop.
Sent from my Nexus 7 using xda premium

N4 Bricked!! No responses! Just red led when I plug in to AC/USB

Hello guys, first than nothing, sorry for my bad english, isnt my native languaje. I got this problem yesterday in the night of the new year!!!!!!!:crying: I was rooted, using Xylon and Faux Kernel, but the problem appears from nothing!!
The first thing that I detected was, the phone take a WHILE!!! for charge.... then, out of the power, the phone get overheating and discharging so fast, never in life that happends, when N4 got discharged i try to turn on again but download mode appers in the screen, finally I get in the recovery, then I did a wipe cache/system and factory reset. Install again the Xylon... but when phone finally turns off, when I plugged in to AC absolutelly nothing happends, the led just turn in red, and the N4 dont start in FB, dont get charge, dont do a sh*t !!!! I conect it to the PC but also nothing appends, the N4 doesnt appear in my device list.
So... my N4 its broken?
There was possibly something wrong with the kernel and rom combination that caused your phone to overheat. I think eventually the heat may have damaged your hardware. Sorry but, if something was wrong in the first place it was not a good idea to reinstall the same thing that was causing the problem, if I were you I would have flashed a stock ROM. My only advice now would be to RMA it and pray
EDIT: I found this if it helps at all:
If you are unable to access the settings menu of your device, you can still reset your phone by performing a Hard Reset. Here are the instructions:
If your phone is on, power it off.
Press and hold Power until the device powers on, then immediately press and hold Volume Down (while still pressing Power). You will see the word Start with an arrow drawn around it.
Press Volume Down twice to designate Recovery mode.
Press Power to restart into Recovery mode. You will see an image of an Android robot with a red exclamation mark.
While holding down Power, press Volume Up.
Use the volume keys to scroll to "wipe data/factory reset" and press Power to select it.
Scroll down to "Yes - erase all user data" and press Power to select it.
Note: If at any point during the above steps your phone becomes unresponsive, you can restart it by holding down the power button for several seconds.
Before you try anything else, try and leaving it plugged in for a while and then try turning it on. Or leave it plugged in to a computer then try turning it on.
joshnichols189 said:
Before you try anything else, try and leaving it plugged in for a while and then try turning it on. Or leave it plugged in to a computer then try turning it on.
Click to expand...
Click to collapse
Try this. I haven't had it happen to me, but I do have a friend who this exact same thing happened and he thought it was bricked. He left it plugged into AC over night, and in the morning it would turn back on.
First than nothing, thanks for reply, I appreciate your intentions to help me.
I will leave it charging all the night and while Im working too... I hope after that, the phone at least turn on.
I dont install the STOCK ROM because I dont have it in my internal memory and I was in my girlfriend house, the night of the 12/31/12, there is not much to do...
I did the same post, but a little bit more explained
Its here: http://forum.xda-developers.com/showpost.php?p=36165434&postcount=2708
(In case you want to know all details about this problem..)
And Thanks againf for your help!
got the same ****
have a look here
http://forum.xda-developers.com/showthread.php?t=2050811&highlight=bricked+
we are not alone with that problem
some more people have the same problem
i did not even overclocked or benchmarked..
read this post, maybe its helpfull for you
http://forum.xda-developers.com/showthread.php?t=2011328
battery
It could be bad battery, how long did bought of you had working phone, how many times did you charge?
Did you use out of the box charger?
Did you have problems with usb jack?
kibox said:
It could be bad battery, how long did bought of you had working phone, how many times did you charge?
Did you use out of the box charger?
Did you have problems with usb jack?
Click to expand...
Click to collapse
I bought it the 13/nov..
I received it 29/nov.
I ALWAYS use stock charger, only 1 time i try to charge it in my car, but it was less thant 5 minutes, I decided dont charge with the car because the energy variates when I accelerate...
After that, I use my phone quiet normal.
I had this problem with my nexus 7. I think my battery died all the way and it couldn't charge. The stick charger wasn't doing anything. But I plugged it into my computer for a few minutes and tried turning it on. Then when the loading screen appeared I ran it to it's stock charger and charged it to full. Your battery probably died. Try different combinations of ways to get it to take a charge. Just long enough to turn on then plug it into its charger. Though the overheating could have fried it
Sent from my SPH-D710 using xda premium

[Q] Nexus 7 (2012) appears to be dead

Nexus 7 was working perfectly last night.
I left in the charger overnight and this morning it will not power on.
Has anyone recovered from this issue?
New battery or something?
Help, please!
Thanks
Chris
chrisp9au said:
Nexus 7 was working perfectly last night.
I left in the charger overnight and this morning it will not power on.
Has anyone recovered from this issue?
New battery or something?
Help, please!
Thanks
Chris
Click to expand...
Click to collapse
My wife's n7 was doing something similar. She used it all the way until it powered itself off and then left it like that until the next day. It would not turn on or take a charge. It would start to turn on then power off.
Try this.
Plug in the wall charger to the n7
Immediately hold power and volume down to try and get into recovery (or bootloader) - this step needs to happen very fast after plugging in power.
In recovery select power down (in bootloader use volume keys to navigate and power button to select).
Unplug the power cord and plug it right back in. You should now hopefully see the battery charging screen.
Hope this helps.
Thanks wilzard,
I've already tried that, and have tried over and over again!
No joy I'm afraid, so I'm not sure where to go from here?
I still have my Transformer TF101, so I'm not totally lost
but it just doesn't measure up to the Nexus 7.
Cheers
Chris
chrisp9au said:
Thanks wilzard,
I've already tried that, and have tried over and over again!
No joy I'm afraid, so I'm not sure where to go from here?
I still have my Transformer TF101, so I'm not totally lost
but it just doesn't measure up to the Nexus 7.
Cheers
Chris
Click to expand...
Click to collapse
I'm really sorry man. I wish I could help you more.
I'm assuming you read this thread - http://forum.xda-developers.com/showthread.php?t=2090826 which details some of the main issues with battery and charging on nexus devices, and tried the things listed within?
I just read the OP and a couple pages, and I learned the nexus has a removable battery cover... neat.
If you haven't tried it yet, pull the back cover off, unplug the battery for a minute or so, put it back in a try it. You may need to hold the power button for up to 30 seconds to get it to respond.
Hope this works because I don't have any other ideas.
Thank you again!
I will work my way through those suggestions,
and let you know how I go.
Chris
It worked!
Took the back off, disconnected the battery, reconnected it,
and pressed On. Up came Cyanogen and away we go again!
You are my hero!
Tell your boss you have my permission to take the rest of the week off!
Cheers
Chris
chrisp9au said:
It worked!
Took the back off, disconnected the battery, reconnected it,
and pressed On. Up came Cyanogen and away we go again!
You are my hero!
Tell your boss you have my permission to take the rest of the week off!
Cheers
Chris
Click to expand...
Click to collapse
Awesome! I'm so glad to hear you got it working again!
Just hitting that thanks button is good enough lol

my device has just quit workin all together

my att g2 4.2 rooted stock rom worked normally last night, this morning I plugged it into the car charger and it displayed it was charging with 2% charge present. I pressed the power button the boot animation began I set it down and when I picked it back up a few minutes later to use it...well nothing...the charging indicator led wasn't lit and when I pressed the power button LG appeared for only a split second then went black. when I plug it in same thing, LG logo for a brief second then disappears. I haven't done anything recently except xposed modules, no flashing of anything. any ideas? thank you guys
It happened to me (on other devices) when I let them discharged too far. Just allow it to charge awhile then try to hold the power button
for 10-20secs ... The NookHD+ were the worst in this situation (it won't charge sometimes, I had to plug/unplug a few times to initiate a charge, I was almost about to RMA one of them).
something else that's odd
when I plugged my device into my laptop the laptop acted like I just plugged in 12 different things that all needed to have their disk formatted. what is going on? wierd
pollutedmuse said:
when I plugged my device into my laptop the laptop acted like I just plugged in 12 different things that all needed to have their disk formatted. what is going on? wierd
Click to expand...
Click to collapse
try charging the device in offline mode ( turn it off and let it charrge for a while) and then turn it on . mind wouldnt turn on because of very low charge yesterday. doing this helped
update
I let it charge for several hours, nothing...it appears to be in some kind of boot loop. I can't turn it off all the way, I hold the powwer button for tensec or so and the LG will appear for a second then disapear and then the back light stays on. oh ya, when I plugged it in a few hours ago it wouldn't turn on but the red LED was flashing. I'm not sure how long it stayed on, but it was off when i got back to it several hours later. thank you for your time fellas!
If you can get to recovery at all, leaving it on charge in there. Has saved me in a similar situation.
shriom_manerker said:
try charging the device in offline mode ( turn it off and let it charrge for a while) and then turn it on . mind wouldnt turn on because of very low charge yesterday. doing this helped
Click to expand...
Click to collapse
Could have been the power switch that makes the phone short circuit and goes off anytime.
Sent from my LG-D801 using xda app-developers app
Thank you sirs, unfortunately still no good
it sounds like you had the same thing as everyone else yesterday that had twrp installed and the carrier automatically updated the system.
I could not get my phone recognized by the laptop and had to use pdanet drivers, which finally worked, but I still had to dig for the device. then had to flash back to stock. There is a pretty good thread on this topic, already. Search for it in the developer section. Do not skip any steps, such as setting the date back to jan2012 and turning off the internet. go slow and methodically, or you will miss a step and get frustrated.

Categories

Resources