Some of these boxed, ready to use machines don't support add-on video cards. To give it the best shot, you boot to safe mode, remove all the video cards you find in the device manager and then follow the video card maker's install guide.
What you may find is when you call in, ATI may have your machine on a list that they say "Oh, that one has problems." Would be nice if they published that...
Just bought a new Sony Vaio computer and lcd monitor. Now I'm not an expert by any means, but have never had major problems that I couldnt resolve with doing the basics. But upon adding my old Radeon 7000 to replace the current Intel(r) 82865G Graphics Controller (embedded of course) all I'm getting are headaches.
Basically all that happens is a blank screen that eventually shows just my wallpaper. According to the hardware manager my radeon is a secondary device even with the intel disabled and with Win xp I just havent figured out how to change it to primary.
So if anyone could give me some advice and perhaps a step by step I would certaintly appreciate it.