My PC "Hibernates" after 15 minutes sleep. Solved!

[Rodion15]

I have Windows 8 and Windows 7 installed in my desktop PC and it goes into "hibernation" after a few minutes sleep. I quoted "hibernates" because I'm not sure this is truly Hibernation, perhaps it's some special Asrock hibernation or something.

After about 20 minutes sleep, the PC starts and then shuts off by itself, but when I turn it on again, you get a black screen first (nothing else, no "resuming from hibernation", nothing) and after a minute or so all appears as you left it before putting it to sleep, as if it had resumed from hibernation.

It happens with both Windows 7 and Windows 8. I'd rather it didn't go into hibernation, but remain in sleep mode. I've tried all options in Power Options > Change Advanced power settings.

I think this has to do with UEFI settings, but I don't which, I've tried some.

Please don't suggest any more Power settings, I've tried everything and I'm pretty sure it's not related with that. Hibernation is already disabled as follows:

dir c:\ /ah (this will verify that hiberfil.sys does exist)

powercfg /h off (this will disable and delete the hiberfil.sys file completely)

dir c:\ /ah (this will verify that your hiberfil.sys has been deleted)


Motherboard: Asrock Z77Pro3M
Processor: Intel Core i5 3450

 

[Rodion15]

Here's how I solved it: I still don't know why this fixed the problem. While looking at Disk Management, I found an 8GB "hibernation" partition, the same size of my RAM . I removed this partition with a third party application and the problem has dissapeared. My doubt is: if I had disabled hibernation as explained above. Why did it continue to hibernate solely because there existed a hibernate partition?. What created this partition?