I left my computer idle before bed last night, woke up to it off this morning. no response to moving the mouse or power button. I started playing with cords and when re plugging the power cord back into the tower it booted, then died about 5 seconds after. I re plugged again, it turned on, I accessed the boot menu and this triggered some immediate updates for about 10 minutes. It reached the log in screen, when it turned off again and is now responding to nothing.
Can anyone guess a possible issue from this activity? thanks so much in advance for any help!