Windows 7/Vista sleep mode problems

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!

Question Info

Last updated March 15, 2018 Views 1,978 Applies to:

Hi joel1963,


When the system keeps rebooting I would suggest you to Disable automatic restart on system failure to obtain the exact error message.

Having an exact error message or error code will be helpful to assist you better.

Step 1: Disable automatic restart on system failure: This option prevents Windows from automatically restarting if an error causes Windows to fail.

The Advanced Boot Options screen lets you start Windows in advanced troubleshooting modes. You can access the menu by turning on your computer and pressing the F8 key before Windows starts.

Boot into advanced startup options andDisable automatic restart on system failure .

Refer the following link:

Advanced startup options (including safe mode)


Step 2: Try updating the Display Adapter to the latest drivers by visiting the manufacturer’s website.

Refer the links below for more details on updating drivers:

Update a driver for hardware that isn't working properly

Update drivers: recommended links

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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