I found the same problem with the same model computer this morning. I hadn't done anything different than usual, that's just what came up when I tried to power on. I called Acer and was told I'd have to buy a recovery disk (and what's the deal with not including those to begin with?), which I did, with several problems along the way. Of course, the netbook has no disk drive, so now I'm looking at that expense, too. I searched through several forums and read about flashing the bios, but I could never get it to work. I've also read about how long it takes to get the computer back if you send it in (unlike my previous HP which I sent on a Friday and had back on Monday!), so I'd like to avoid that. Any suggestions would be much appreciated.