For several months I've had this problem: When powering down my pc at night, clicking the start menu either with the mouse or with the keyboard windows key results in a very brief view of the menu followed by the menu disappearing. This happens most of the time after leaving the pc on all day. To power down the pc I have to hit ctrl+alt+del and select the power icon in the lower right. Sometimes, I can get deeper into the menu, but when trying to select the power icon, the menu again appears briefly then disappears. Very seldom (perhaps less than 5% of the time) the problem does not present itself. I have tried rebooting to see if the issue exists when the pc first boots up - but there is no problem in that situation. It seems this only happens after the pc has been on for many hours. Maybe this is happening because of a particular program. This pc is used, typically for watching youtube videos and playing the games fortnite, roblox, and rocketleague.
I don't know if this is malware. I just need some help diagnosing and fixing it. I spent some time searching this issue online and tried some recommended fixes, but nothing has worked.
Would appreciate any help geekstogo can provide.