The computer starts up and runs for less than a minute before shutting down or locking up.
This is a symptom of:
A.
Overheating.
B.
Incompatible RAM.
C.
A faulty hard drive.
D.
A bad internal USB hub.
Explanation:
Reference:
http://lifehacker.com/5570909/how-to-prevent-your-computer-from-overheating-and-why-itsimportant