Hi all. Thank you for taking time to read this post. This is my first post to this group and I hope I can find some help as Dell has not been able to help me thus far. I've looked at previous posts on similar errors but those haven't helped me. Thus, I'll try my own post so I can answer questions specifically on my situation. I have a Dell XPS 600 desktop. I had formatted and reinstalled Windows on the factory HD. The installation seems fine, but when it goes to boot up, I get the following blue screen message: A problem has been detected and Windows has been shut down to prevent damage to your computer. If this is the first time you've seen this Stop error screen, restart your computer. If this screen appears again, follow these steps: Check for viruses on your computer. Remove any newly installed hard drives or hard drive controllers. Check your hard drive to make sure it is properly configured and terminated. Run CHKDSK /F to check for hard drive corruption, and then restart your computer. Technical Information: *** STOP: 0x0000007B (0xBACC3524,0xC0000034,0x00000000,0x00000000) I have tried both repairing my OS as well as fresh reinstallations after boothing from my orange dell disc. Each time, the installation seems to run til the end but the final boot always causes the same error, always at the same time. I thought it was my original HD, so I purchased a new SATA drive. However, the brand new HD leads to the identical error message at the same time in the booting process. I've also updated my BIOS to the most recent one off the Dell website. Unfortunately, that has not made a difference. Now I'm thinking it's something else. Does anyone have any suggestions as to how I can fix this? I can't get onto Windows anymore, even by Safe mode (I get all these lines about partitions when I try). I have the Nvidia DXG051 nForce4 SLI motherboard. I'm fairly computer literate, but not as much when it comes to opening up the box so any help is appreciated! Thanks in advance!