Unable to install two video cards. There is a solution?

Question

Iron

There was a need to add a third monitor to the system. An old GeForce 7600GS card was found and modified using this method(only PCIe X1 slot is available in the system). The modified video card was tested on a working computer (with a built-in video card) and turned out to be fully functional. She refused to work on the home computer. In Device Manager, it is detected correctly, but it is displayed with an exclamation mark and writes "Windows has stopped this device because it reported problems. (Code 43)". Dancing with a tambourine, rolling back the driver to an older one, manually installing the driver did not give any results ... I sin that the system has a second video card and also Nvidia (GeForce 8600GT). Maybe someone faced a similar problem, or someone has ideas what else can be done - I will be very grateful for the advice.

Answer 1

Check it out alone on your home PC, first check out Step #5 on your own link.