I have installed Windows 7 x64 over my Vista x64 as a upgrade. I have problems with the computer not going into sleep mode. I have a home built system with a ASUS P5QL PRO motherboard. The system will stop working and the power and hd indicator light will
go out, and the system will constantly reboot until I kill the main power and I have to reset the bios. This also happened in Vista. Out of curiosity i reinstalled Windows XP Home Edition on a second hd, and it sleeps and/or shuts down properly. Any help or
guidance is appreciated! Thank You!
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Also check if there are any BIOS updates available from the manufacturer's site.
Note: Modifying BIOS/complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the
configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.
Divya R – Microsoft Support.
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