Reply 20 of 39, by Skyscraper
Great now test the motherboard outside the case with two identical memory modules and a video card. Remove the Power Supply from the case and connect it to the motherboard (black wires next to eachother) and connect a HDD to the PSU only to get some extra 12V load. The P100 can run for 1m or so without a heatsink but I see no reason to test without it so I would remount the cooler.
Connect a monitor and a keyboard and turn on the PSU.
If it dosnt work double check the jumper settings, perhaps the previous owner had the system overclocked, also test remounting the CPU, perhaps there is some corrosion in the socket.
New PC: i9 12900K @5GHz all cores @1.2v. MSI PRO Z690-A. 32GB DDR4 3600 CL14. 3070Ti.
Old PC: Dual Xeon X5690@4.6GHz, EVGA SR-2, 48GB DDR3R@2000MHz, Intel X25-M. GTX 980ti.
Older PC: K6-3+ 400@600MHz, PC-Chips M577, 256MB SDRAM, AWE64, Voodoo Banshee.