I think I have a big problem here but I'm hoping someone might have a solution.. I've had similar problems in the past. Not that frequent and a reboot is all I need to keep going. I was using firefox, My Avast warned me of a threat, I 'moved to vault'. This kept repeating 4 or 5 times. Error messages were popping up and I was closing them. I closed as many tabs as possible. All seemed to be OK and then a balloon pops up warning me that Windows firewall is inactive. I activated it - but I don't think I should as it's not usually on. Then a minute or so later the computer crashed. I try to start in safe mode but 'a problem has been detected and windows has been shut down to protect my computer' I get this - 0x0000007E (0xF789E508, 0xF789E204, 0xF789E508, 0xF789E1BC) or the same but with these as the last 2 groups - 0xF789E4C0, 0xF789E1BC I tried again and selected 'last know successful start' PAGE FAULT IN NONPAGED AREA & technical information is STOP: 0x00000050 (oxEC6B738D, 0x00000000, 0x8A7FC08C, 0x00000002) Can anyone please help me here?