On my personally built desktop I recently encountered a problem where my computer restarts when loading windows. More specifically, when I power on my PC it first sends me to the screen where you see, "we apologize for the inconvenience...windows did not start sucessfully...recent hardware or software changes may have caused this." it then gives you the five options: Start windows normally, Start windows with last known good configuration, safe mode, safe mode with cmd prompt, and safe mode with networking. When I choose either of the first two it begins to start windows but then suddenly restarts and goes back to the previously mentioned screen. Wash. Rinse. Repeat. If I choose any of the three safe mode options I can watch as it loads the required system files for windows. They speed along for about three seconds and then stop on a file and then the computer restarts itself again. All three stop on the same file, "multi(0)disk(0)rdisk(0)partition(1)/WINDOWS/system32/Drivers/agp440.sys" I am assuming when I choose the non-safe mode options it is restarting on the sae file even though I can't see it happen. Usually when a computer does something of this nature it can be because of a few things, power, cooling, or possibly a virus. I calculated for my sysrem how much power it needed and by my estimations it's ok. All my fans are spinning so I don't think it's cooling. I recently reformatted to RAID 0 but I install and update antivirus software before even connecting to the internet and I'm careful about the usual methods of getting a virus (e-mail attach. etc.) I am at a complete loss for what's wrong and any help would be great. My profile has all my computer specs if there are any questions about that. I just tried this solution to fix my computer but I was met with a, "can't find any hard disks error."