Bad graphics card???

[PokerDegenerate]

OK so I got this Piece of crap old gateway tower for free from someone on Craigslist just to screw around with it and see how everything works...The guy told me it didn't turn on at all and it was useless (which didn't matter to me cuz i was taking it apart anyways)...So i take off the door to the case and when i was disconnecting the PSU cables I noticed that some of the connections were not all the way plugged in...So to get to my point I connected everything and Poof after plugging it in it powered up...But when i connect my monitor to it it says no signal....could this just be a bad graphics card??? Or is it more likely something on the mobo??

 

[Atomic Rooster]

I would suggest removing everything including memory, CPU, add in cards, etc. Then reinstalling it all to make sure all connections are nice and tight.

 

[_-..zKiLLA..-_]

clean it out if dusty too