This is not a solution, but giving direction where you could check for issues:
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If you know how to fiddle with registry, check what is your Registry value says
Note: Playing around with registry can cause OS to stop working.
![Cry :'(](https://www.computerhope.com/forum/Smileys/classic/cry.gif)
The registry settings can be found at "[HKEY_CURRENT_USER\Control Panel\PowerCfg]"
And the code may look like, just verify everything is there, DO NOT change
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Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Control Panel\PowerCfg]
"CurrentPowerPolicy"="2" ;Power Scheme (Default="0")
; "0" = Home/Office Desk
; "1" = Portable/Laptop
; "2" = Presentation
; "3" = Always On
; "4" = Minimal Power Management
; "5" = Max Battery
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The Advanced and Hibernate options are stored in the following registry key:
HKEY_CURRENT_USER\Control Panel\PowerCfg\GlobalPowerPolicy\Policies
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This issue could be related to your ACPI driver as well. So reinstall chipset and base drivers first.
![](http://img574.imageshack.us/img574/6548/registryz.jpg)