Recently I bought a new graphics card because my old one was having overheating issues. However, I have had nothing but issues with it since. The card itself is a PhysX NVIDIA GT 720 2GB GDDR3. I use a pretty old computer. It's a Dell Studio XPS 8100 from 2007 or 2009 and I use Windows 8.1. I have run tests and checked the temperature of the graphics card so I know it's not another overheating issue. It has several issues, one being that it occasionally blocks applications. Another is that sometimes the graphics glitch out and do weird stuff. There is a third and final issue and that it frequently crashes and recovers. I have several screenshots. This is it blocking my Windows OS? It also does this with chrome and several games. I have uninstalled and reinstalled the graphics drivers several times and uninstalled and reinstalled the card itself. In device manager, all of my processors have yellow "!'s on them. I have looked for solutions to these problems but most of if not all are for Windows 10. Please help!
This is it blocking my Windows OS.
Below is the kind of visual glitches that frequently happen.
This is it blocking my Windows OS.
Below is the kind of visual glitches that frequently happen.