hi did anyone find a working resolution for this, i was upgrading my w500 to windows 8 via usb, all legal software, no dual boot, all standard, just upgrading to win 8. it halted during this proccess and would not restart, i have tried everything, reformated and cloned the hard drive as i have two of these tablets, when its powered on just black screen and windows key lights up, cannot get access to bios at all, when i previously could, i suspect its the bios chip thats corrupt, yes its out of warranty :-( , only answer i got from acer is that i can pay to have it repaired, surely this has been an on going issue for so long, its most definetly a known issue, possibly even due to fauly bios chips, acer should be doing more to help, at least when your xbox gets the ring of death microsoft still fix it up to 2 years after warranty is run out as its a known issue, my tablet was never modded was just a simple windows upgrade and i seem to have lost my tablet, that shouldnt happen.