Nexus 7 won't charge/power on/can't access fastboot or bootloader. Same issue here as well ive had it for about a year and im not able to access anything via my pc google help forums had no. Put new one charging port in this morning, nothing, not even battery DEAD sign, nothing tried power, button / volume trick, I did notice on the.
Is your Nexus 7 charging very slowly? You're not the only one.A significant number of users have taken to Google's support forums to report that their Google Nexus 7 is charging very slowly. They are finding that a full a charge is suddenly taking up to 10 hours, whereas it previously used to take just a couple of hours.One user on the support forums commented that their Nexus 7 only charges 'around 2-3 hours for every 25%', while another added that their tablet 'Takes ages to charge, charges only up to 85% and discharges really fast.' The issue more commonly affects the original Nexus 7, but users with the new 2013 model are also reporting problems.Initially, many users put the issue down to the Android KitKat (4.4.2) update which recently rolled out to Google's tablet. But the real problem seems more likely to be caused by oxides building up on the contacts of the USB connector or problems with the microUSB slot on the tablet itself.Google have stated that they are investigating the issue, but havn't identified the source of the problem yet. What to do if affected?If your tablet is under warranty the first thing to do is contact customer support and report the problem.
We've had a Google Nexus 7 in our office stop charging entirely due to the microUSB port slowly degrading over time, so if you're already suffering from a problem it's best to get your tablet replaced or fixed as soon as possible.If your device is no longer under warranty, the first thing to establish is whether the problem lies with the charger itself. You should try using the wall-charger, plugging it into a laptop, using a dock or possibly even considering buying a new charger for your Nexus 7.One solution that has helped a number of users is to unplug and re-plug the USB connector into the wall adapter a number of times. You can find out exactly what to do in the video below and we recommend that you also install the 'Battery Monitor Widget' from Google Play.With the helpful widget you can details on the power currently being delivered to your Nexus 7. Basically, you want to unplug and replug the charger until the widget displays a +ma reading - in theory you should be able to get a reading well over +1000mA.If that doesn't help users on Google's forums have suggested cleaning the USB connector and the microUSB port on the tablet itself, but you do so at your own risk. Hopefully, Google will find the cause of the problem and post an official fix in the coming weeks. As soon as they do we'll let you know.Have you suffered from slow charging on your Nexus 7?
Have any of the proposed solutions fixed your issues? Let us know by leaving a comment below. Huawei Cashback offer.
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A year or so ago, I bought an old Nexus 7 that was very slightly used (I took it off my girlfriend's hands). Everything worked fine, but I barely ever used it.Two days ago I broke it back out. I charged the battery to full but never ran anything. The next day, I opened it up again and noticed that there was an update - 5.1.1.
Not researching beforehand, I went ahead and tapped the notification, and then the problems started flooding in.First, the tablet became locked in the loading animation after the Google logo. I let it do this overnight just in case, and it was still stuck in the morning. So I held the power button and volume button until it turned off and tried to reboot it.At this point, it booted to a 'No command' screen. I did a factory reset from here, and rebooted.
Now the tablet became stuck in a reboot loop of the Google logo.After some research, I flashed it back to version 4.4. Everything worked fine with the fastboot and everything was working great.
I ran a few updates from the tablet and got to version 4.4.4. Again, it loaded fine.I tapped the envelope icon in the top-left corner to view my e-mails. As I was reading the first one, the screen froze. I let it sit for a few minutes and it was still frozen. So again, I powered off by using the power and volume button.
My battery was around 30% at this point.Now the tablet shows absolutely no signs of life. I have tried holding the buttons with all of the combinations that are online, I have tried doing combinations of buttons while plugging/unplugging the charger. I have tried using a regular micro-usb charger as well as a 2A charger. I have tried reseating the battery. NOTHING has worked. The tablet shows NO signs of life - no flashing, blanks, anything at all.What else can I possibly do? Looking at your issue related to battery and charging (which may not be the sole cause- I am not familiar with Nexus devices).
Since you barely used it for an year, it would not have been charged either and the battery could have discharged to very low levels. Li Ion batteries have a protection circuit that kicks in when the discharge falls below a certain level. It requires certain current to be applied to it before charging can happen.
This is called 'Boosting'. Mentions steps getting into the bootloader to revive it. Plug-in your dead N7 to a wall charger.
(Jump immediately to step 2.). Immediately after plugging it in, press Volume Down and Power at the same time.
Once in the bootloader menu, use Volume Down until you see “Power Off Device.”. Choose that option with the Power button. Once your device is off, unplug the charger and then plug it back into the device. You should now see the battery meter with your device returning to life. You could also try to change the charging cables- I would suggest is to use a 20/22 AWG cable for charging (if you don't want to buy, look for a short thick charging cable-it may help).
See for my details. Nexus 7 is more choosy: It will stop charging if voltage levels drop and resistance comes into play again.
Goes into details and saysNexus 7 will stop charging if the input voltage is less than the internal battery voltage plus 0.2 volts. There are other drastic methods, which you could try if you are comfortable, involving. First of all, relax. You didn't break it.Absolute worst case scenario is that your battery is completely dead.If you want to do this the easy way, you can always unclip the back of the Nexus 7(just slide a guitar pick in between the screen-half and the rear-half), unplug the battery (carefully) and either find a way to charge it (put it in another Nexus 7, etc.), or replace with a battery that works.PS.
This is literally as bad as it gets in terms of how much damage you can actually do by carelessly flashing ROMs on an Android: A situation where the device really appears to be broken. Don't ask non-technical friends what they think, and resist any temptation to break it all the way. Charge the battery to 100% before flashing and you'll never have this problem again.