Graphics card not working in top PCIe slot but it is working in lower PCIe slot! HELP

[S2000Gan]

So a system I built for a friend a while back isnt displaying video out on the 8600GTS I transplanted from their old system.

HOWEVER, when I move the graphics card to the other PCIex16 slot (electrically x8 I believe) on the motherboard it works.

WHAT MORE! When I put a different graphics card into the top PCIe slot it works fine.


Anyone know whats going on?

UPDATE: Just put the video card in a different computer and it's the same story, doesnt work in the top PCIe slot but it works in the lower one.

Dying but not dead card?

[AlwaysFSX]

Maybe the extra 8x pins on it are defective in one way or another? Try to RMA the card.

[S2000Gan]

weird to think pins x9-x16 are causing the card to not display any video out.

Im not going to do this, but I wonder if covering pins x9-x16 with electrical tape and plugging the card into the top PCIe slot would make it work.

I dont think I can RMA a 7 year old nvidia branded 8600 gts