Did my GPU die or something worse?

I have a Radeon HD 5770. Prior to a couple of weeks ago, everything was fine. Temps ran at a steady 60c at full load. Now, for the past two weeks, my temps went up to 100c with the fan running full speed. Two days ago, Sim3 started having artifacts on screen yet WoW ran fine. Then, the next day while playing WoW, the screen locked up and I received a message about the video drivers having an error. I uninstalled the video drivers to reinstall again (latest version) and now the PC isn't even detecting the card at all and when it sits in Windows for a moment, I lose video signal.

I've checked the cables, reseated the card, looked for signs of physical damage, double checked my PSU (which is no more than about 4 months old and everything is running fine) and now it drops video signal the moment it tries to boot into Windows. So, has my GPU died (the card is 5 years old) or something worse?

I've already ordered a new card, although it's an Nvidia. But, I worry that it isn't just the card. I worry that it's the PCI-E slot that's given out. Today I even tried "baking" the card, no luck.
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  1. Sounds like the GPU or some components on the video card got fried. Good that you ordered a new one.
  2. That's what I thought as well. The issue I have now is how to go about installing the Nvidia card because the PC won't keep video signal long enough to run driver sweeper to get rid of the Radeon drivers prior to installation. I suppose my best bet would be to install the new card, boot, remove old drivers, reboot and install Nvidia drivers?
  3. Yeah you should just be able to put in the new nvidia card and boot up. Just uninstall your old AMD drivers and install the Nvidia ones and you should be good to go.
  4. When you install the new card, Win will recognize the brand and install the generic drivers for it. From there, you can go ahead and download and install the latest drivers for that card.
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