New to this so be gentle. I was given a Mac tower that used to work. Not sure exactly what model it is, #'s on the back are Family-M5183, Macserver G4, date of 2000. Side of it has handle ring and when pulled, side opens and lays down exposing inside nicely. Appears to have 3 hard drives by seagate. On start up, it beeps loudly 3 times, the light on the start button flashes in unison with beeps. It hums so I assume its running. The light continues to flash, apparently in a sequence. Flashes once,pause,then 3 flashes. Over and over it repeats. Is this a diag code? It actually started and worked normally once since I've had it, then it froze and hasn't worked since. Sure would appreciate some advice and help with this. I have a mechanical background and electronic experience in automotive industry so I can do some diag with DVOM's. Hope to make this thing usable again.Thanks for any info out there folks.PD>