My desktop won't stay asleep. It consistenly wakes back up after approximately 50 seconds.
This happens regardless of whether I manually select Sleep from the start menu, or if it goes to sleep on its own.
- Windows 7 64-bit Service Pack 1 (problem also existed prior to service pack)
- ASUS M3N78-VM motherboard.
- AMD Phenom II X6 1055T Processor 2.80GHz
- 8 GB Ram
- Samsung SSD 830 Series 64GB SSD drive (boot drive)
- 2 SATA HDDs mirrored with onboard NVIDIA RAID AMD Radeon
- HD 6950 Video Card (problem existed before this was added)
All devices in Device Manager appear to have the correct device drivers. No yellow exclamations.
Things I've tried:
- BIOS set to S3 Only (previously set to auto)
- All "Power On By" options in the BIOS set to Disabled
- Unplugged all USB devices (including KB/Mouse), Network Cable, and Monitor Cable
- Unchecked "Allow this device to wake the computer" on Network Interface
- Disabled the "USB selective suspend setting" in advanced power options.
- powercfg -devicedisablewake for all devices that show up in the "wake_armed" list
powercfg -lastwake reports:
Wake History Count - 1 Wake History  Wake Source Count - 0
I have several events in the system event log that look like this:
The system has resumed from sleep. Sleep Time: 2012-01-21T15:18:12.274800000Z Wake Time: 2012-01-21T15:19:23.638800000Z Wake Source: Unknown
If anyone has troubleshooting suggestions for this, I would greatly appreciate them as I'd like to solve this problem so my computer can get a good night's rest!