Best to start with one unit(the one that appears to have the best chances of resurrection), and swap out parts. I would start first with the I/O board, then the mobo, then the CPU, then start checking into the minutiae. Good luck! John __________________________________ Do you Yahoo!? Yahoo! Movies - Buy advance tickets for 'Shrek 2' http://movies.yahoo.com/showtimes/movie?mid=1808405861