Ok so to start off I have pretty much no experience with computers so bare with me. I'm using a computer I got for Christmas and it was used it looks quite old, it is a Dell and my OS is Windows XP. The motherboard only had PCI slots so I got a EVGA GeForce 8400 GS with 512 MB DDR2 video memory from Tiger Direct. Before I bought it I had an onboard graphics accelerator or something like that. I did research on how to install it, tried it, and when I booted it up it worked fine until I got to the welcome screen, then it was just a blank screen, but I could hear it starting up. I booted it up in safe mode and it was working, I installed the drivers and figured I could start it up normally and it would work, but I still got the blank screen when I tried. It will still boot in safe mode no problem though. I have no idea where to start, like I said I have no experience with this, if you need any more info just ask, any help would be greatly appreciated.