I had to remove Vista 64 because I could not find drivers for my printer. Now the machine will not allow installation of WinXP. I get a BSOD. I was able to use my trusty BartPE disk that booted normally, but I'm not sure what that does to help me at this point. I reformatted the Vista 64 partition, so it is empty. When I built the machine, I put the OS on this 50gb partition, so my other data is OK. I thought that I would have no trouble reinstalling WinXP once that was done. On using the Vista installation disk, I can go into a dos-like mode, but "Help" doesn't work to give me any commands to use. It appears my best option is with BartPE, but I could use guidance as to a method of procedure.