Hi guys! The other day I was using my computer to download something and all of a sudden my computer turned off. Now let me clarify that it's not unusual for my computer to shut off all of a sudden. It happens all the time.But this time it was particularly weird/odd because even after I turned off the computer the monitor screen's on/off button kept on blinking. Like it'd blink really crazily. I don't know what's wrong. The only way to get it to stop blinking is to cut off all electric sources so I had to turn off that whole power cord.

Do you guys know what might be wrong? Any advice is really appreciated. Thank you in advance!