Hi all,
I'm struggling with getting my 2012 Nexus 7 to start and hope someone out there can help!
I think I may have let the battery become discharged, but anyway here are the symptoms:
Connected the power lead and the tablet initially showed the empty battery icon but then started to flash up the word Google but does not boot up. Left it connected for a couple of hours. Still no joy.
Did a bit of internet research in an attempt to reset the tablet via the button combinations.
With the power lead disconnected, holding on/off plus volume+ together eventually gives a blank screen and from there holding on/off plus vol- gives the Android figure with its belly open. Hitting vol+ scrolls thru the four options of start / power off / recovery mode / restart bootloader, however when I select 'recovery mode' and press the on/off button instead of showing the Android with a red triangle it simply goes back to flashing 'Google'.
From there, if I press and hold on/off and vol- for several seconds the screen gives a momentary blue flash and then the fours 'dancing blobs' appear, eventually to be replaced with the flashing 'Google' but still no boot up.
If I connect the power lead although I can get the initial Android figure, I cannot scoll for any of the options.
All of this sounds like a major fault, but funnily enough yesterday evening I left the tablet with a blank screen and disconnected only to find this morning that it had booted and had all my apps showing, all of which appeared to be working properly. so I connected the charge lead and it said I had 17% battery remaining however the battery charge graph showed a number of major gaps and also showed the wrong date (2 days behind). So I connected the power lead and left it for 10 mins to find that the charge state hadn't moved but also that the screen brightness was reduced as if it wasn't connected. So I unplugged and then re-plugged the power lead and it said it was optimising 1 of 2 apps then the screen brightness returned to full, any appearing to function ok.
So left if for around 30 mins at which point the charge had gone up to 21% and I decided to try switching it off. Bad move!! Instead of booting up it simply returned to the flashing 'Google'. Which is about where the story started.
I've had the back off and the battery connector hasn't shifted, but one thing I did notice is that there is a fourth key switch below the vol- switch but without a hole in the cover to actuate it when assembled. Is this part of the button-press combination to restore factory seetings with the back off ??
If anyone out there can make sense of what the tablet is doing, I'd love to hear from you!!
Mike
Related
Anyone having boot problems?
Waiting the case, i have put my tab in his box moving from a place to another, when i took it i saw a green andoid image with the message "POWER RESET or UNKNOWN UPLOAD MODE".
Now it is blocked in this message state. Can't turn off, reboot ...use it...
Anyone know the way to reboot (key combination)? if galaxy tab has a recovery system? or something in order to resolve this problem?
Just to know, no root attempts, only some application normal installed from the market...
hi, i think if you press the power button and leave it pressed, it will reboot.
after the battery charge finished and the recharged all work fine...
i think the "block state" has been caused from the home+volume keys that probably were were pressed in the box..
it would be usefull to know these key-press effects
They are standard android combos. Google is your friend.
I stumbled across this screen while my Samsung SGH-I897 (Captivate) was powered down, hooked up to my PC using the USB cable and the battery was half way charged. I held down both the power and volume up buttons for a few seconds and got to this screen before the unit attempted to boot. It remained there until I held down the same key sequence for about 5-7 seconds. It's now back to a powered off state, still hooked up to my PC via the USB cable, and the display has the standard large battery icon showing it at about 50% charged. Leaving the Captivate idle will continue to charge my phone via USB (abeit slower than having it attached to the power adapter) and the screen shuts itself off. It practically looks like it's fully off or fully dead like this, but it's not.
Hi Everyone,
I know its a few threads about how to unbrick Advent Vega and how many threads is that many ideas how to do it.
I was running ViewCOMB 3.2 built 5.1 and everything was ok, but ive installed Rom Manager from Market, and tried other rom (wrong one ).
After reboot nothing is happening, i mean when i press power button for ok 10 sec and then short press again, screen is on black with backlight for about 1 sec and keep coming off.
Ive tried to turn into boot mode (2sec. back + 2 sec. power) about 1000 times already with power cable on and off, but nothing happening.
I have drivers installed on my laptop (had installed custom rom already).
I want to specify a few facts:
Is battery must be charged to full? or should start another try from flat?
If so, how to drain battery if tablet wont power up?
Is better to try with power cable on or off?
Some people saying about holding buttons for a 2 sec, other for 1 sec, what is right?
Any ideas?
Many thanks!
Finally after hours of pressing and holding power + back buttons I've sorted it.
- hold power button for about 10 sec. (to make sure device is off)
- hold back button 2 sec. (don't release)
- press power button till notification sound will come on.
Then had notification sound from Windows about new device connected. On my device list was Nvidia usb boot-recovery device.
Before last try I've charged battery to full (blue light) then disconnected power cable. I couldn't do it with battery full and power cable in (strange).
I think the main hint is to make sure that device is off. Ive noticed that even if screen is off device might be running.
Hopefully this little explanation will help
okti said:
Finally after hours of pressing and holding power + back buttons I've sorted it.
- hold power button for about 10 sec. (to make sure device is off)
- hold back button 2 sec. (don't release)
- press power button till notification sound will come on.
Then had notification sound from Windows about new device connected. On my device list was Nvidia usb boot-recovery device.
Before last try I've charged battery to full (blue light) then disconnected power cable. I couldn't do it with battery full and power cable in (strange).
I think the main hint is to make sure that device is off. Ive noticed that even if screen is off device might be running.
Hopefully this little explanation will help
Click to expand...
Click to collapse
THAAAAAAAAAAAANNNNNKKKKK YYYYYYYYYOOOOOOOOOOUUUUUUU!!!!!!!!!!!!!!!!!!! I had the same problem and I thought it was bricked for like, 4ever, so THNX!!!
i had exactly the same problem last night when i asked CWM to do a backup and the screen went black and wouldnt switch on.
one way to tell if it hasnt powered off properly when its stale booting is to look under the black surround between the screen and the camera and you may see a faint blue light. Only viewable with about 5 deg viewing angle (so same as the screen LOL)
i found i could not get it into boot mode at all. No matter how many times i did it. Ending up taking the back off and pulling the battery and then trying again - guess what? Worked straight away first time!!!
I can only presume that when its in this stale boot state it isnt shutting down properly, even if the light is off etc. Although i did come across a post after sorting it that said sometimes it can take a 60 second press of the power button to properly shut it down when its in stale boot.
So now i'm back to standard modded stock rom 2.2 and its horrendous!!!!
Just finished downloading the beta ics rom exe - so gonna whack that on and have a play! Hope its as good as they say it is. If it isnt, then i'll put honeycomb back on.
I think that instead of pulling tha battery out you could also press and hold the power button for 9 seconds, right?
My nexus 7 tablet is dead , so I plug it into the chragers and no little battery image shows up, but after about 5 minutes ( I didnt touch the power button ) itll say Google, then it powers up, goes to the home screen, says 0 % Shutting down, then turns of and repeats the process? what can I do? And now the screen is flickering.
Joelkat said:
My nexus 7 tablet is dead , so I plug it into the chragers and no little battery image shows up, but after about 5 minutes ( I didnt touch the power button ) itll say Google, then it powers up, goes to the home screen, says 0 % Shutting down, then turns of and repeats the process? what can I do? And now the screen is flickering.
Click to expand...
Click to collapse
EDIT: I got it working after using the phone to charge for a few minutes
not sure if this fixes or helps anyone else but i got bootloader working
Same thing is happening to me. Two days now. I have followed all the instructions i found online saying
Drain off all the juice from your Nexus 7.
Connect your dead Nexus 7 to the charger and press the Volume Down and Power Button simultaneously. By doing this, you’ll head over to the Bootloader menu of the Nexus 7.
Scroll down to the “Power Off Device” option with the help of Volume Down Button.
Select it by tapping the Power button and disconnect the device.
Quickly connect the device to the USB charger again.
You’ll now see the Battery picture on your screen making your device working again.
Click to expand...
Click to collapse
However when i get to the bootloader i cannot scroll through the options or select anything. It just says "Start" and none of the hardware buttons respond.
When i do let it boot as above poster said it saw connect to charger and shutting down
weirdest thing is that it says "Connect to charger" and if i jiggle the usb it changes to "Charging 0%" but shuts off
I've tried multiple cords and chargers so the issue seems to be with the nexus
i'm at a loss and i've had the device since launch so returning it isnt an option..
any suggestions or help is greatly appreciated
Hi, my parents N7 wasn't used for a long time and it was completely dead. It couldn't even stay on when plugged in.
I went into the shutdown mode to charge it for an hour or so and managed to get it on.
The battery was at 2%. I decided to do a factory reset while the device was plugged in but now it's become stuck on the Erasing screen. Its been there for a few hours now. I've tried restarting but it just goes back to the Erasing screen. I've also tried booting into recovery but it just goes straight to the "Erasing..." screen again.
When I press power and vol up on the Erasing screen it tells me "Formatting /data...." in small yellow writing but like I say its been like it for hours.
Any advice? device is completely stock, not rooted or anything.
Thanks
Make sure you are using the OEM 2.0A charger from Asus and leave it connected to charge overnight for at least 8 to 12 hours. Unplug it and wait a few minutes before attempting to get into Recovery Mode or Bootloader (hold Volume Down & Power to restart) - if that work, reconnect the power supply as you want it to get power while cycling.
Keep a close watch on any error or messages popping up on the screen as you do this - post them here.
What is your goal in doing a Factory Reset ?
If the battery is completely dead & remained in that state for a long time, it might not come back to life & a replacement battery is probably the answer for the long run - is it out of warranty ?
Letitride said:
Make sure you are using the OEM 2.0A charger from Asus and leave it connected to charge overnight for at least 8 to 12 hours. Unplug it and wait a few minutes before attempting to get into Recovery Mode or Bootloader (hold Volume Down & Power to restart) - if that work, reconnect the power supply as you want it to get power while cycling.
Keep a close watch on any error or messages popping up on the screen as you do this - post them here.
What is your goal in doing a Factory Reset ?
If the battery is completely dead & remained in that state for a long time, it might not come back to life & a replacement battery is probably the answer for the long run - is it out of warranty ?
Click to expand...
Click to collapse
Hi the correct has been used. I left it charging over night and is now at 100%. I can tell this from the battery indicator in the middle of the screen when I power off.
When I try and boot into recovery (vol - & power) the device just goes back to the "Erasing..." screen where it stays indefinitely (to my knowledge). The screen is still animated (the robot with the blue rotating graphic inside him).
If the warranty is 1 year then I believe it has expired.
Thanks
leecasey said:
Hi the correct has been used. I left it charging over night and is now at 100%. I can tell this from the battery indicator in the middle of the screen when I power off.
When I try and boot into recovery (vol - & power) the device just goes back to the "Erasing..." screen where it stays indefinitely (to my knowledge). The screen is still animated (the robot with the blue rotating graphic inside him).
If the warranty is 1 year then I believe it has expired.
Thanks
Click to expand...
Click to collapse
Is there any way to clear the pending factory reset request? I can't believe an untouched, un rooted device has just bricked like this
I am putting a $20 reward via paypal for anyone who can supply the solution to this as a thank you for the time they put into it. Thanks.
leecasey said:
Is there any way to clear the pending factory reset request? I can't believe an untouched, un rooted device has just bricked like this
I am putting a $20 reward via paypal for anyone who can supply the solution to this as a thank you for the time they put into it. Thanks.
Click to expand...
Click to collapse
It's strange indeed. Make sure you keep holding volume down until you (in theory should) get to the bootloader menu.
I have the same problem. Whenever I turn the device on, it goes straight to Erasing... screen, no way out. If I try to do Power+Volume Down thing, it turns off the device, then it'll start again and back to Erasing... screen. Help! :crying:
sidmaximus said:
I have the same problem. Whenever I turn the device on, it goes straight to Erasing... screen, no way out. If I try to do Power+Volume Down thing, it turns off the device, then it'll start again and back to Erasing... screen. Help! :crying:
Click to expand...
Click to collapse
Same for me
I was trying to fix my phone because I was getting a System UI stopped working error message (another previous post).
I went to turn it on today and nothing... phone is dead. I push the power, and combination of vol buttons, hold, press, etc... nothing.
even when I plug in the power cable, I don't even get the "Charging" icon coming up.
any ideas?
this phone problem went down hill really quick.
Try to hold power button for over 10 seconds.
If doesn't help at all than try different charger/cable.
Leave it on charge for a few hours as when battery is completely discharged it may take a long while to start up