My PC will lock itself after a period of not being used. After I input my password and unlock it, clicking shortcuts will either open the application multiple times or open the system 32 folder. Sometimes I can then click shortcuts, files or folders and other times I can't click anything at all. Pressing keys seems to either do nothing or open random applications and I can't access the windows 8 screen which shows my apps or bring up the side panel either once this has happened.
I've scanned my computer using Malwarebytes and Avast, found and deleted a few "potential threats" but am still having this problem. It only seems to happen after the computer locks itself.