I think the problem may be that I uninstalled my old graphics card's drivers and now there's none on my computer. But now the question is, what do I do about it? My system restoration disk wouldn't load or even do anything.
Not having drivers installed will not prevent your system from booting up. Remember that when you install windows for the first time there are no drivers installed and it works fine then. I'd check and make sure that you didn't accidentally disconnect something when installing the graphics card.