Computer will not sleep!!!

[Sewellyboy]

Greetings,

I updated a few components on an old system to hold me over until the new i7 processors are out. Everything seems to be working fine, but when I try to put my computer in sleep mode or "low power mode in Vista" the screen turns black for about a second like it is trying to go to sleep, but then comes back to life and no sleep for my computer. I enabled the jumpers on the mother board to respond to a keyboard wakeup, I did not change the usb default to be able to wake up. I also went into the bios ad enabled space bar wake up. Still no go. Any ideas? I'm running Vista home basic 32 bit and here are my components. I've tinkered with the power saving options in vista and still no go.

1
Western Digital Caviar RE2 WD1601ABYS 160GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
Item #: N82E16822136200

1
EVGA 512-P3-N954-TR GeForce 9500 GT 512MB 128-bit GDDR2 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail
Item #: N82E16814130378

1
ASUS P5K SE EPU LGA 775 Intel P35 ATX Intel Motherboard - Retail
Item #: N82E16813131278

1
Intel Core 2 Duo E7200 Wolfdale 2.53GHz LGA 775 65W Dual-Core Processor Model BX80571E7200 - Retail
Item #: N82E16819115052

I also have 4x2 gb of Transcend ddr2 800mhz ram. ( I know vista only recognizes 4, but my buddy works at transcend so he threw 8 at me. )

Tagan TG-480 480W ATX Power Supply - Retail
Item #: N82E16817101509

Any help is greatly appreciated!!

 

[Horsepower]

Check "problem reports and solutions" I would bet there is an entry about a driver. Also check "reliability monitor" to see details about what is happening on sleep. If you are real savvy go to admin tools and try to decode system error logs.