[Nexus 7 Q&A, Help & Troubleshooting] Daftyman:
Posted recently as my Nexus 7 seemed to be bricked. It seemed hopeless as it was a competition prize and i had no receipt of purchase and it seemed that the factory warranty had run out. nVidia the competition sponsor I guess bought a shed load of them and then handed them out later.

Anyhow, after seeing repeated demands that I use the original charger (which was a US charger and as such not compatible with 240V power in the UK) I finally decided to try it. I remembered that i had bought a transformer for a guitar effects pedal so I plugged that in and the charger into that and then the Nexus 7. Still no joy. However I decided to leave it connected and let it charge over night and the whole of the following day.

This evening I forlornly tried to boot the unit and HURRAH! I got the Google logo.

I waited for the animation to start for Android....

And I waited.....

And I waited a bit more....

Nothing. It seems stuck. I then powered it off by holding the power button and it turned off, only to immediately turn on and stop at the Google Logo. The only way to stop this was to get into fastboot mode (Power and volume down pressed) and cycling to power off and hitting power again to execute.

So I thought I could get somewhere.

However I cannot get it to go properly into recovery mode. I get the bootloaded screen where I can restart the bootloader (which does just that), power off (which also works correctly), Start (locks at Google Logo) or recovery mode (which also locks at the Google Logo)

I cannot get to the screen with the image of the Android with the red triangle and the exclamation mark.

The bootloaded screed says the following:

FASTBOOT MODE (red text)

PRODUCT NAME - grouper

VARIANT - grouper

HW VERSION - ER3

BOOTLOADER VERSION - 4.23

BASEBAND VERSION - N/A

SERIAL NUMBER - 015d2d422357f20b

SIGNING - not defined yet

LOCK STATE - LOCKED

I have the SDK loaded and I cannot get the "Fastboot devices" to work. I previously sideloaded KitKat onto it so all the drivers are installed. I cannot get my PC to see that there is anything plugged in to the USB port. I think i need to get to this screen so that I can initiate a total system restore don't I?

Also the system heats up like an oven when it is locked at the Google logo.

I have repeatedly tried to get the drivers installed and have yet to get the PC to recognize the device. This is really wierd as I had used the adb to sideload KitKat onto the device.

Shortly after the sideload and a small 1.5Mb OTA update it went on the fritz. It would do absolutely nothing. After an extensive charge on the original 2A charger I can get it into Fastboot. However the fastboot sometimes freezes and I cannot get into Recovery Mode. Whenever I try to hit the power for recovery I get the Google logo and that's it. Have tried numerous presses of Vol-up and Power but no use.

It seems that there is something that the unit is trying to process and cannot get past that point. What can I do? I seem to be in driver hell. I am totally Stock. When the system was last operational USB Debugging was switched on. I don't care if I have to wipe it flat, I just want it working again.

Help please!!!!!!