PC won't sleep

Hi,

I recently built a gaming rig (i5-4690K/GTX970) having issues with it sleeping, I set it to sleep and it wakes up straight away. Is there anyway I can find out what is waking my PC up?

Thanks

Are you moving the mouse?

I have the same issue on mine, goes to sleep, walk away from pc wakes back up, probably some program, it doesn't do it on linux partition only windows i haven't tried to fix it.

No, mouse isn't being moved. I've tried two different mice and still wakes up straight away

Have you checked your logs?
Windows, I assume?

Some warm milk, dimming the lights, and putting on the sound of thunderstorms is typically a good way to lul anything to sleep. Or check your power settings

I had a similar problem with mine. I updated my motherboard from BIOS to UEFI (because Gigabyte is good about supporting their older products) and had to reconfigure the power management settings. I prefer to use S5 which hibernates and writes the RAM to disk because the power at my school is a little iffy sometimes. The update caused something in the power settings to try to do S3 sleep which relies on providing power to the RAM. The mobo was trying to read the RAM into the HDD but the OS was trying to sleep which caused it to wake up again.