post-it wrote:did you originally install the NVidia card first or the ATI card first ??
.. me thinks its a DMA problem that XP/Vista might be fighting.
.. have you tryed removing one of the cards and loading the drivers to just that card remaining; shut-down/Reboot your computer, and make sure that your drivers are working for that card.
.. after varifiing that that THAT card is working properly; shut-down your computer and install the other Video card. On start-up, your computer should detect the Newer device and ask for its' drivers ^_^
.. that's the only thing that works for me -- having dual-video cards on my system too
post-it wrote:.. hmmm
.. possibly an Old School Issue
.. do you remember if your video cards had an IRQ number assigned to them ?
( this might be grabbing-at-straws on today's computers however, this problem might be as simple as a Bios Setting Error .. on older computers, P4 and such, there was a Bios Option for assigning the DMA and IRQ setting to Video Cards. In the Video section of the Bios, you had to turn-off the Boards Video in order for the Bios to see your Video Card that was added to the System. )
.. and, yeah -- I know that's a pain to find .. but Windows XP was known for re-setting the Bios Option on some installs. ( the Bios defaults also were known to cause Audio problems if the Boards Audio was set to ON. )
.. at this point; we're both lost as to an answer -- if it is not a Bios setting error ~_~
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