Let's start of on the right foot. I have read and researched the internet for a week. I have contacted the respected vendors where I purchased my parts and recieved no help. After going through several forums I found this one to be the most knowledgeable. With that said here is what I am up against. I have two video cards on hand. Nvidia 6200 64MB Turbo Cache(6200) and a 512MB 8600GT also from Nvidia My computer is using Media Center XP(OS) with 2G RAM using 4 slots of 512MB. The computer is a Gateway 5045E. The standard video board is the 6200. I started playing the American Army game and wanted to gain any speed in my system I could so I began to tweak XP settings such as start up programs and virtual memory sizes. About a week or two later I noticed when I got up in the morning the system had rebooted itself. When I signed in, the error box came up and I began my research. The error pointed to the Nv_4 (I have to get the exact file from the WinDbg program I used). Then the monitor started to reboot after 3-5 minutes. I then swapped the monitor and cable from this computer with another. This computers monitor and cable worked for days on the other computer (monitor and cable ruled out) but the monitor I moved to the bad computer shut off (went black) and ever since then I have not been able to recover. I found the serial cable port on the back of the case that had tape over it stating "use the installed video card not this onboard video connection". I removed the tape and plugged in and I have video. It is slow and choppy but I have video even to this day. I went out and bought a new video card(8600GT). The problem now is the system will not detect the pcie video card, neither one of the cards is detected. My friend can see the video cards when he installs them on their computer. I have gone through my bios and don't see anything pertaining to onboard video (Foxconn mobo 51GU01). I have removed memory and tried one stick at a time, I have tried to flash the bios but I can't get the boot disk to be seen. I bought a new power supply. I now have a 450watt power supply which replaced the 300watt I had. The power supply meets the rail current spect by 2 amps. The pcb requires 18 amps and I have 20a. Let's see if that is a good start with information I can remember. I just want to be able to detect a video board in the PCIE slot. I have enabled that slot to be primary video in bios but that doesn't do a thing. Thanks ahead of time for those who read this post.