Hello, so I have had this pc for about a year now, and I have just got a new case for it, but when I turn it on, the screen stays black, and the pc looks like it’s running. While I have it on it turns off and back on again while the screen still stays black. It’s also been doing something like this with the other case when it turns off randomly during a gaming session. It’s been getting worse until now when it just doesn’t want to boot up. Please Help!