Wierd 7800gt problem

[TroOper]

hi,

 

I recently swapped out my 7800gt to try a friends card, which worked ok.

However when i go to put my 7800gt back in, the system boots up fine(can see hdd led booting as to load windows), but i get no display at all from the minute i turn my system on

 

The wierd part is that it works fine in another pc , if i put a spare x800xt into my ultra D system boots up into windows ok

Why would a perfectly good gfx not work in either pci-e slot but others will.

 

Ive tried a quick 15mins cmos clear but that didnt work, am kinda stumped for ideas

[iamkoza]

try the bottom slot just for the heck of it, see if it works in that one.

[red930]

There are two DVI outputs on the back of your 7800GT. Have you tried both connectors or just one? Do you remember which output you used before?

[TroOper]

hi, yes ive tried both dvi outputs, plus both pci-e slots

kinda weird seeing as it works perfectly in other pc`s and other gfx cards work in my ultra d

[krazypoloc]

Uninstall your graphics drivers, reboot, then reinstall. Nvidia drivers save a profile of you hardware configuration, sometimes they get messed up and try and use a card that doesn't exist, or try to utilize the other PCI-express slot even if no card is present there.

[TroOper]

pc boots with it in the slot, but theres no display before/after windows loads, so cant really see drivers making any difference, thanx tho

[krazypoloc]

So you can't see the post screen either?

[TroOper]

nope

[ganders75]

Have you tried a longer CMOS clear yet? Tried it back at stock?

[TroOper]

yes tried a 24hour cmos clear using the cmos clear guide still no joy.

I guess i am stuck with a x800xt instead till the new nvidia range come out, just frustrating tryin to think what is causing a good gfx card not to work.

 

never come across anything like this before