Why doesn't my computer wake up after going to sleep?

Episode 1148 (1:07:11)

Mark from Villa Park, CA
Sleep Mode

Mark has a 2 year old computer, and after a few minutes it just shuts off. Leo says it sounds like hibernation is enabled on the computer and that means it goes to sleep. Sleep is problematic because it can have issues waking up. It should wake up, reload the memory from the physical disk, and be active. But all too often it has an issue with this process. So Leo recommends turning off hibernate.