What's wrong with my PC?

Zakah

Honorable
Jun 7, 2013
18
0
10,510
I have an HP a6537c desktop computer, I never really had any problems with it but now I am not sure what could be wrong with it.. It powers on, and all the fans run, but none of the USB ports will work, and the cd drive when pushed opens, then closes quickly. I have a graphics card that I put into it, and when I plug the HDMI cable in it just says monitor going to sleep, I know the HDMI cable is good, and the graphics card is working. If anyone can help me find a fix for the computer it would be greatly appreciated.. It was running fine until today.
 

Zakah

Honorable
Jun 7, 2013
18
0
10,510
Alright I tried that and it didn't seem to do anything, usb ports are still not working and won't show display. Graphic card fans, and all other system fans work, system is free of dust too.