Hey guys, first time poster, and first time mac user. I just bought a G4 digital audio at a surplus sale, brought it home -- it didn't have memory or a hard drive, so I put those in -- and went to boot it to install Tiger... and nothing. It powers up, yes, but no display yet. The light on the front of the machine is blinking an error code at me, and no matter how much I search on google, I cannot find a listing for these codes. It's a long blink, followed by a short one, and then it goes blank. Long, short, blank. It will keep repeating this until you turn it off. I already tried resetting the PMU and this happens still. Any suggestions?