Uninstalling a graphics card?

I recently bought a PCI radeon 9200SE graphics card, since it was cheap as hell and I just needed something a step up from the onboard piece of crap I was already using. Installed it and everything was fine for about a week, then I started getting what I've found to be called the "infinite loop" error.

I tried every single fix I could find and nothing seemed to help beyond keeping it alive 45 minutes on the first boot with the new settings, before crashing every 5 minutes again.

So I decided **** it, im going to go back to the onboard graphics and try the card in my other pc. This is when the next problem started.

If I disable the radeon and re-enable the onboard graphics under device manager, when I reboot with the monitor plugged back into the onboard socket it seems to act like its working with multiple monitors. My desktop background is fine, but I only have the top left hand corner of my icons and the right and bottom limit of the screen are way way beyond the boundaries of the actual screen itself. I can't figure out how to get this back to normal.

Im currently back to using the radeon, and it seems to be absolutely fine for the first boot of the day and then goes to shit after a couple of hours. I have a feeling this probably means its overheating, but I can't see how thats possible, especially since it sometimes works for quite a while before a crash and other times only just gets into windows.

So, my questions:

1. How do I switch it back to the onboard graphics? Im tempted to just reformat and start from there, would this reset the graphics settings and make it display properly?

2. Has anyone else experienced this "infinite loop" problem with a radeon 9200SE and an MSI motherboard? If so, did you ever find a way around it?

Also, I've looked into upgrading my power supply incase thats the problem, but I really cant afford to upgrade anything so thats not an option.

System Spec:
AMD Athlon XP 2200+ 1.8Ghz
MSI MS-6390 Motherboard
256MB RAM

 

it's best to completely uninstall your previous graphics card before installing a new one ... this is the most likely cause of your troubles ... if I were you .. I would uninstall both devices ... then install the radeon and see how that works ... I usually do a full reinstall when I get a new graphics card