Computer hibernates when I tell it to sleep

Solution 1:

Workaround

Your system might not be fully compatible with Windows 8/8.1. If you don't need hibernation, you can turn it off entirely:

1. Open a command prompt as administrator.

2. Type or paste the following command, and press Enter to run it:

   powercfg -h off
   

   Changes are applied immediately.

Remarks

• You will regain some disk space which was previously reserver for the hibernation file (hiberfil.sys). By default, that's 75% of the installed RAM.

• The fast startup feature will be disabled, too:

  Starting with Windows 8, a fast startup mode is available to start a computer in less time than is typically required for a traditional, cold startup. A fast startup is a hybrid combination of a cold startup and a wake-from-hibernation startup.

  _{Source: Distinguishing Fast Startup from Wake-from-Hibernation}

Solution 2:

I had the same issue (computer hibernating when it should be sleeping). When I applied the workaround to completely disable hibernation:powercfg -h off. It solved the problem for me. My computer would finally go to sleep. The cool thing was on a whim I turned hibernation back on powercfg -h on and the problem was still fixed. Now hibernation works when I say hibernate and sleep works when I say sleep. For me at least this has completely fixed the problem.