Hi. My Attab Seven Tablet is stuck in a constant boot cycle. I have done a full hard reset but it did not make any difference Tablet is a year old and out of warranty. Can some tell me if I can reinstall Android back onto the tablet using sdcard or some other way. (Basically, I want to delete the corrupted version and reinstall a working version) 1) I turn the Tablet on 2) Boots up as normal and gets to the main screen. 3) Stays on main screen for about 20 seconds 4) Shuts down 5) Reboots. Spec : Android Jelly Bean Dual Core 1Ghz CPU 1Gb DDR3 Memory 8Gb Storage 7" Display