Okay I'm going to try and make this short and sweet:
My old graphics card went bad (the fan went out, it would over heat and crash my computer. It was a geforce 420). So I went out and bought a new one (geforce gtx 650). I installed it properly, turned on the computer, and it started working fine. It said it found new hardware, installed it, and prompted a restart. So I restarted the computer. When it turned back on, windows loaded, then the log-in screen pops up pixelated, I can't see anything, and I can't continue to download the drivers. When I switch back to the onboard video card (with the blue VGA cable) and try to download the drivers, it wont let me due to the fact the "hardware cannot be found".