Pc shuts down when in sleep mode

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
MSI 790FX-GD70
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
9 answers Last reply
More about shuts sleep mode
  1. What OS do you have?
  2. Is your computer entering sleep mode?
  3. buwish said:
    What OS do you have?

    Windows 7 Professional X64
  4. database_89 said:
    Is your computer entering sleep mode?

    Yes it's entering sleep mode after 30 min
  5. 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?
  6. It's different in win 7 but my settings are for maximum power
  7. No, i was wandering why it shuts down after maybe one hour, it never stays on if i do something else
  8. Again, what are your settings for stand-by mode in the power options?

    Look here to understand what I am talking about: http://www.microsoft.com/windows/windows-7/features/power-management.aspx
  9. Best answer selected by alex2399.
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