Ok I've been looking around on the forum, and haven't found an answer to this. I recieved my mac pro about 5 days ago and immediately begin moving music over to the new system and installing all my major programs (final cut, maya, photoshop...) The first and second day everything seemed fine. On the 3rd while I was surfing the net, the computer up and restarts for no reason, I thought, "strange" but didn't think anything of it. I believe that day I installed the new firmware, but the restart thing didn't happen again that day. 4th day the computer restarts itself agian and another time forces itself to sleepmode and can't get out. Both these things were fixed but just restarting the computer. Honestly I just figured the comp was a little buggy and I could wait it out until apple sets up a new update. but yesterday I installed a new seagate 320gig harddrive and put windows xp pro on with the new bootcamp. Installing windows went fine and even the drivers disk went fine.I go back to windows to start setting up my dispay settings and after about a few minutes in windows the computer restarts itself again, except this time it doesn't start back up. No start up chime, just a light on and fans. I'm totally freakin out about this time. I've reset the SMC, done every type of keyboard button combo on start up possible, reseated RAM, and harddrives, and restarted with just each harddrive, nothing works! Just lights and fan. Anyone have any possible solution before I sit on the phone with apple for a week?