[QUOTE=lordxomega;2601679]Ok I have a Compaq Presario Desktop PC with a AMD 64 Athlon Processor, and a ATI Radeon Xpress 200 onboard graphics chipset. The problem started when I turned my PC off, took my friends 1056mb Nvidia GeForce graphics card-he got this card from a donation organization pre opened-turned my PC off with out installing the drivers first, pulled out my current ATI graphics card-both cards are PCIe slot required- inserted his graphics card, plugged the video cable in turned on my computer and all it does to this day is spin the processor fan, the hard drive is not spinning and I’m not getting any video feedback on my monitor. The weird thing about it is my Power Supply. I can no longer turn on the PC if I turn the voltage switch to 230, not even a green light; I can only turn on the system with it switched to 115. I tested to power supply with a meter and it shows full power output so I’m confused. Would appreciate some help.[/QUOTE]
You first should’ve left the ATI GPU in and uninstalled the drivers first then shutdown the computer and inserted the Nvidia GPU into the slot and then after rebooting reinstall the Nvidia drivers. So from the looks of it your going to have to put back the ATI and bootup and remove the drivers and then install your Nvidia GPU and drivers again. Those two GPU have very different software and if you don’t remove one or the other drivers with the GPU in the slot your going to cause problem as your having the software not recognizing the GPU and doing something it shouldn’t do.