|Since you've already gone through most of the restore procedures, i agree with StuartS and riider. |
My experience in the past:
gateway = crappy PSU's. Besides the fact that OEM parts these days are not quite as robust.
Open it up and check the wattage of the PSU. if it seems to be at fault, buy a NEW psu that has a rating of 50-100 watts higher than your current one. It'll reduce stress.
I assume you're trying to start it with the button on front? not any kind of wake-on-Lan or something?
Not everyone can decipher Klingon script...
chay' ta' SoH tlhe' vam Doch Daq