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:
http://lifehacker.com/5570909/how-to-prevent-your-computer-from-overheating-andwhy-its-important