Does your computer have an intergrated video controller? If so you may need to disable it in the BIOS. Have you downloaded the latest drivers for your new card from the manufacturer's website, and uninstalled the old drivers from the add/remove programs list before installing the new ones?
Someting else you could try is the "Omega Drivers" for your brand of card and operating system here is the link for them
http://www.omegadrivers.net/omega_drivers.php when I had problems with my ATI card I switched to the omega drivers and it cleared the problems up. Before you install them though (if you decide to do so)
Download driver cleaner pro from
http://downloads.guru3d.com/download.php?det=745 install it, go here and read over this thread
http://www.driverheaven.net/windows...stalling-installing-ati-drivers-properly.html That guide is for ATI drivers, If you don't have an ATI card just replace ATI with Nvidia..print it out if you need to have reference material. One option that the guide doesn't mention a lot about is the cab cleaner feature. Once you have cleaned the drivers in safe mode, on the driver cleaner window click tools--->cab cleaner and clean
driver.cab and then clean
SP*.cab (Note * is a wild card for the current service pack you have installed)
When using the cab cleaner feature, be patient as it can take 10-15 mins to clean each cab file.
After doing the above stated, please post back and let us know the results.
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