Motherboard shot?

[ZRock]

So I have an ASRock 770 extreme3 mobo, and I was moving around wires to get some better cable management. As I try to turn it on now, everything spins up, seems to be running fine, but I have no video (Radeon 5770). So I tried a GT220, then an old PCI video card, still no video out of any of them. I've made sure the 4 pin and 24pin connectors are on properly... Does anyone have any ideas for me to try before declaring it a bad MOBO?

 

[SMOKEU]

Have you made sure that your PSU is connected to the cards? It could also be a faulty PSU.

 

[ZRock]

PSU has been tested good

 

[SMOKEU]

Have you connected the case speaker to the motherboard to hear if it beeps? Most motherboards should give out a series of beeps depending on what fault it is.

 

[Automata]

Have you tried the basics?

Reseating of all cables?
CMOS reset?
Only plug in necessary devices?
Try to run the system outside of the case?

I know you stated the power supply was good, but how did you determine this and have you tried another in this system?

 

[ZRock]

Ok, EVERY part except the CPU/mobo have been tested in other systems and are working flawlessly. The only thing I haven't done was a CMOS reset, solely because I wasn't sure how that would help the issue at all.