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.
Related
It was working fine all of sudden, it freezes and restarted by pressing power off button. Then It fail to start. I thought, it might drained completely.
I plugged it to power socket, however there is not indication, what so ever about charging or not.
It is very strange that, we can't remove battery (just like a phone) to restart.
1. Is there any way, I can know, whether it is charging or not
2. How to start the device in safe mode
3. Any other suggestions ?
Thanks in advance.
Started by itself ...
Sent from my GT-P1000 using XDA App
nchary05 said:
It was working fine all of sudden, it freezes and restarted by pressing power off button. Then It fail to start. I thought, it might drained completely.
I plugged it to power socket, however there is not indication, what so ever about charging or not.
It is very strange that, we can't remove battery (just like a phone) to restart.
1. Is there any way, I can know, whether it is charging or not
2. How to start the device in safe mode
3. Any other suggestions ?
Thanks in advance.
Click to expand...
Click to collapse
There is a trick you can use to start a non-operational Tab:-
1. Attach the Tab to a power source.
2. Press the Power button for 30 seconds and touch the middle of the screen and hold...... A short menu will appear asking if you want to reboot or switch off.
3. A battery charging indicator will now appear and you should hear an audible bleep from the Tab.
4. Detach the power cord and try again to power up..... this time it should boot as normal.
My tab crashes on samsung text boot
it stopped on samsung boot text
ps: im opened hard reset menu, reboot and after a lot of minutes, tab start
It seems my Nexus 7 seems to be hosed.
It was running the latest android os as pushed out by google (maybe 4.2.1?) Not sure what I did, but I am in the APX mode and I cannot exit it. The screen is completely dark, and I am not sure it is working when I press the buttons.
I have held:
Power button for 60+ seconds
Power + volume up
Power + volume down
Power + volume up + volume down
If the device is plugged into my laptop, I get a beep after holding any aforementioned combination indicating that the system detects the device but it shows up in the device manager as APX with a question mark.
I have opened the back, and disconnected and reconnected the battery.
Prior to noticing it was not working, I set a torrent download using µtorrent. My initial guess was that the battery discharged, but I have been charging it now for a few hours without any resolution.
Please help! I am past the returns for Walmart, and I do not want to ship it to ASUS to have it repaired.
Bump.
This is frustrating. I have never owned an android tablet before, and I had no intentions of rooting it. Now I have no idea if I can even recover it. Other threads are saying I am hosed because nvflash does not work on the nexus 7.
Any ideas besides throwing it in the garbage?
Try letting the battery die.
Or try these tips: http://forum.xda-developers.com/showthread.php?t=1789135
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
So few days ago my phone suddenly turned off and kept rebotting itself (It would reach the samsung galaxy logo and then turn off). I thought it was a battery issue so I removed it for 30mins and tried again, worked fine for an hour then problem started again. I left it over night to charge in the wall socket incase.
Same issue next morning and no solution.
I replaced the battery with a friends and the same issue happened on my phone (i used my battery on his and it works fine on his) so I removed the issue of battery itself.
That evening the phone then just stopped responding at all. It would not respond to pressing the power button (no load, no vibration).
Tried entering download mode using vol down + home + power. Nothing. (So cant use Odin)
Tried entering recovery mode using vol up + power. Nothing
Tried hard reset using vol up + power + home. Nothing.
(All the steps I used a fully charged battery from another s4 phone and removed/re-entered before trying again)
So I check online and notice some people having issues with power button, but even if that is the case - wouldn't my phone still charge? I dont even get the battery chargning icon on the screen when plugged in either PC or wall socket.
I opened it up and changed the motherboard with another samsung s4 and my original problem mobo still does not load on the new s4. (My new mobo worked on the old device though).
The ONLY response I got was when I used my original mobo on new s4 device and plugged it into PC, it popped connect and then disconnect sound and thats it (doesnt recognize usb port).
What are my options apart from getting another motherboard or going to a shop for a JTAG repair? I was contemplating just removing the power button and seeing if that helps in getting a charge response lol
Well your power button is broken for sure. Replace it and then test it.
Lennyz1988 said:
Well your power button is broken for sure. Replace it and then test it.
Click to expand...
Click to collapse
Wouldn't the phone still recognize charging even if the power button is faulty?
penguness said:
Wouldn't the phone still recognize charging even if the power button is faulty?
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Click to collapse
It always takes a few seconds before it starts to charge. So maybe the device reboots before reaching the charging phase. I'm guessing though. But since your problems started with power button issues it would be the logic place to start.
The part only costs a few dollars.
Well I'm exactly in the same situation as you, since this morning on a i9505 running JFLTPE-GPE 5.0 ROM. The screen appears for 1 second or 2 (Samsung logo) then it powers off . I need to remove the battery to try something else.
Same behaviour, even for recovery mode, so Odin is not an option.
I thought that changing some kernel settings have caused that, but as I just put them back to default values, it should not happen.
I didn't have some power button issues, it was just powered off at my wake up this morning. In your case, does your phone vibrate and power up instantly when you put the battery ? That's the case for me, but it should not be the normal.
My problem is actually solved : indeed, it was the power button. I removed all the screws and played a little with this power button (air dust, etc...), enough to make it start correctly !
I managed to do some backups, and now I hope that it won't break again.
Calicodesiles said:
My problem is actually solved : indeed, it was the power button. I removed all the screws and played a little with this power button (air dust, etc...), enough to make it start correctly !
I managed to do some backups, and now I hope that it won't break again.
Click to expand...
Click to collapse
Yeah, that happened before (automatically powering up, vibrating, going to samsung logo and then shutting down and doing it again until I removed battery - putting the battery back in with start it up without pressing the power button).
When it was in that phase, the one thing that did work was doing a soft reset (home+power+down vol, and then holding just power) - however that only worked for like an hour before it went back to the restart phase.
However now it doesn't respond to anything at all. (Any kind of response I got was when I put that mobo in another s4 and plugged in usb, which just gave a connected/disconnect sound on w7, no life on the phone itself).
Be very careful as to what you do, I suggest you do NOT leave the battery on it and charge it (which was the last thing I did before it went unresponsive) - my guess is phone went haywire trying to turn on/off continously.
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