computer genius 

What your Grandpa calls you when you fix something by turning it off and on again.

Grandpa: How'd you fix my television?
Son: I just rebooted the router is all.
Grandpa: You're a computer genius! What would we do without you?
Son: I have no idea.

computer genius by guy354 September 17, 2016

Computer Genius 

A person who can use "Paint" The archaic graphics program bundled with Windows

OMG you're so 31337, you can use Paint. You must be a Computer Genius!

Computer Genius by Anonymous September 13, 2004