I'm sorry, but there is nothing else to tell you. I can leave my computer for hours and when I get ready to use it again it will not work. I have windows 10 and wonder if the problem is that. I never had this problem before with windows 7. I can play games, etc. but nothing else works. I don't do that much with most things since I am still learning windows 10, which I must tell you, I'm sorry I downloaded it. That's about all the information I can give you. If there is not solution I guess I will just have to keep doing it. I do not put the sleep on and never have, I do not shut down either. Please help,,,,,,,,