Purchased a PowerMac G5 DP 2.5GHz PCIx Liquid Cooled a few weeks ago on an online classified site (it was only $10 so I might as well) the previous owner said that the mac would "boot when cold and wouldn't turn on when hot". Took it home, thinking it was an issue with the LCS I opened the machine up and gave it a large clean with an air compressor getting out all the dust I could, put it all back together and when I powered it on, no chime and no display on the monitor. All that happened was the fans turned on, then slowly ramped up until they were at full blast. I reseated the ram, reset the PMU, same thing. I read online that it might be a PRAM battery issue, so I ordered a new battery online replaced the old one. Still the same issue. I replaced the ram, same thing. And finally I took the LCS apart and reseated the CPUs. Is there anything I can do, I have also read that it is most likely a motherboard issue and that baking it in an oven "might" fix it.