M5A99X Evo - Weird reboot/sleep behavior...

[eturnal]

Hey all.

My machine is acting strange when rebooting and sleeping after I finished installing Windows last night.

Motherboard: Asus M5A99X Evo
Processor: AMD Phenom II X4 970 BE
Ram: 2x4GB Crucial Ballistix DDR3 1333
HDD: 1TB Hitachi
Video Card: 9800GT SLI
PSU: Rosewill 500W
Case: Antec Three Hundred Black Steel

When I turn the computer off via Windows...
* The monitor turns off
* The keyboard turns off
* The fans inside the computer speed up and stay that way until I switch off the PSU
* The power light on the front of the case stays on

When I reboot the computer
* The computer goes to the 'Off' state (with all the symptoms stated above)
* The computer never comes back on
* Key presses won't wake it up

When the computer sleeps
* The monitor turns off
* The fans inside the computer speed up and stay that way until I wake the computer up
* The power light on the front of the case stays on
* Key press returns the fan speeds to their normal state and Windows comes back up

If anyone knows if there is a BIOS setting, a jumper or a setting in Windows I need to configure to fix all this I'd love to know what it is. It's annoying walking down stairs and it sounding like a jet engine is firing up... and also, I don't think it's good to put that unnecessary wear on the fans.

Thanks in advance for your comments.

 

[eturnal]

Just an update - The fan spinning at a stupid high speed appears to be the graphics card in the first slot.

 

[eturnal]

Just closing out this thread.

My Rosewill 500W PSU crapped out on me the other day so I purchased an OCZ 750W ZT PSU. The new PSU will now let my computer sleep or shut down without turning the fans on full blast. Also, I can reboot my machine and wake it from sleeping without toggling the rocker switch on the back of the PSU.

So, verdict: Faulty PSU.

 

[mrface]

Best answer selected by mrface.

 

[mrface]

This topic has been closed by Mrface