My pc shuts down by itself a period of inactivity, if i leave it to go watch tv when i come back sometimes its still open but often its close.
Any suggestions why?
AMD Phenom II X4 955 Black Edition
XFX Radeon HD 4870 1GB 256-bit GDDR5
G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
THERMALTAKE Contac 29 2 x 120mm CPU Cooler
HEC X-Power Pro 600W PSU
ZALMAN Z7 plus comuter case
I have had a problem with sleep mode in WinXP, turned out to be a registry key had been changed somehow. I do not have Win7 so I cant be of much help, but have you checked your Power Options and see what the settings are for stand-by mode?