|The hardware in question are:|
ASUS M4A785T-M/CSM motherboard
EVGA Nvidia Geforce GTS250
I've installed Windows XP sp3 and updated all the drivers for the motherboard itself. The device manager only shows the ATI RADEON 4200 or whatever onboard graphics the motherboard has.
I've tried installing the drivers for the video card from the support CD and from the driver downloaded directly from nvidia.com. I've checked my motherboard's BIOs -- made sure the date is correct and that the primary video support (I think this is how it's worded in the BIOs screen?) is the PCI slot that the graphics card is in.
I've tried disabling the onboard graphics through the device manager and through the BIOs at startup.
None of these things have worked. Are there any other strategies I ought to try?