What should I do if the win8.1 system can't sleep?

win8.1 system has found a lot of problems since the upgrade of Xiaobian, and sometimes there is an impulse to roll back win8. Today, when I was using win8.1, I found that I couldn’t sleep at all. Even if I was asleep, I couldn’t wake up. I could only restart the system. The following small series will tell you what to do if you encounter this situation?

1. Update the graphics driver, we can use the driver wizard to update, or directly to the official website to get the latest official updates.

2. Open the registry HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Power in turn, and delete AwayModeEnabled.