basically everytime i turn off my monitor or computer or both, i can't turn it on again unless i unplug and plug the plugs many many times over and over again until the monitor's working, it' so random and only happens when i turn off the pc for long periods, if i turn it off and go to toilet for 10 minutes it would boot well and normally, but i turn it off and go to bed for hours or go outside for an hour, it won't boot normally again at all, i would have to unplug and plug the plugs many times to have a chance for it to boot normally,