Hey guys. You might have remembered that I made a thread that on this iMac it would sometimes boot up with a progress bar like it was updating the EFI or SMC. Well it wasn't, and it did it again last night, and hanged. Restarted, and it hanged for 40 minutes, and then moved, and started over (it didn't restart) So I ran the full extended tests with my Apple CD that came with it. Apple Hardware Test at least found something. See these screen shots... One of the Apple genius' claimed that there was a voltage mis-match between the CPU and the Power supply when he replaced the screen (about 4 months ago) I told him that it was working fine before. He stated it was a small issue, and probably won't do anything. So now, it looks like I have a sick. I haven't tried restarting into OSX yet. Got to go to school now, so I can't reply for 6 or so hours, but help would be appreciated. -Nick EDIT: school admin unblocked MacRuors Forums.... Yay Can't upload the pictures. Here is the error 4SNS/1/40000001: 'VDOR'