NVidia 7800 GTX PCIe works some of the time

NVidia 7800 GTX PCIe works some of the time

Post by Mark A. Ri » Wed, 12 Mar 2008 20:19:39



I installed my NVidia 7800 GTX PCIe in my dx5150 MT, after upgrading
my power supply to 550W. The video card is connected to the PS as
well. I have "PCIe" selected in the BIOS as the preferred video.

About half the time I boot, the NVidia card works and I can use my
dual DVI monitors just fine. Other times, the card is not recognized
at all and I have to flip the DVI cable back to the onboard ATI DVI
output.

When the card is not detected, Windows Device Manager shows nothing
except the ATI adapter.

What else can I try to get my NVidia card to work reliably as my
primary adapter?

Thanks,
Mark
 
 
 

NVidia 7800 GTX PCIe works some of the time

Post by HH » Wed, 12 Mar 2008 20:33:21

Step one: Pull the card and check the contact edge. Clean carefully with as
pencil eraser if necessary. Then reseat the card in the slot several times
to be sure it is fully seated.
Sometimes an expansion card can look seated at first but not be fully.

HH

 
 
 

NVidia 7800 GTX PCIe works some of the time

Post by utah.p » Wed, 12 Mar 2008 22:18:23

Is your power supply SLI ready or are you using the power adapters
that came with the card? Check to see that the power supply is feeding
the card with power by trying another power supply or at least try a
different power plug than the one your using. As said above make sure
your card is seated correctly too.
 
 
 

NVidia 7800 GTX PCIe works some of the time

Post by Mark A. Ri » Thu, 13 Mar 2008 21:27:50


Is it possible the Nvidia card is not playing nice with the onboard
ATI chipset? Might I have to swap it out for a Radeon?