It hapens during play,few days ago it also hapend during normal work on my pc. Comp. just reboot itself and brings out a windows error report saying: "Windows has recovered from a serious error" The error report sends me on McSoft page witch tells me that it is a problem with a driver, but I can not find any clue to identify it, neither some documentation about that problem. I done some things you said on the sticky posts!!! Cleaned my system physical,checked with memtest,no errors,checked the disk also ok!!! Recently I bought a new PSU.Speedfan monitor showes: dont know is this enough power on rails for my system???? +3.3V 3.36V +5 v 5.00V +12V 11.43V This is the last chrash: Category102) Event ID: 1003 File name:faultrep.dll File Version:5.1.2600.2180 Source:System Error Error code:00000019,parameter1 00000020,parameter2 864be8e0,parameter3 864be9b0,parameter4 0a1a000d Please Help!!!! Thanks!!!!