Video cards not powering up?!?

[Razehell]

Hey when I shut my comp down and try to turn it back on right away my video cards don't seem to boot up (no display and the fan doesn't turn). I need to keep the comp powered down for a good 10 mins untill I can power it up and hope to see the video cards fan turning.
I seen the same problem with 4 of the same video cards and 2 different power supplys, so I dont think its a defective card or PSU.


Any ideas?

[Nebulous]

Could be the mobo acting up.

[Razehell]

happend to another mobo of the same model too. :confused: