I just acquired a core2quad Q8200 to replace my system's old E7500, but after installing it and booting up the system, the display doesn't work. The system starts up, but there's no sound, no video, nothing. It works fine with my E7500(I plugged it back in to check), but not with the quad core. I've tried moving the bios jumper, but that didn't work.
After some bios digging, it's actually NOT an Asus board, but an Intel D945GCL, and unfortunately I didn't check beforehand. However, upon looking up a list of compatible processors, the neither the Pentium 4 2.99GhZ, or the Core2Duo E7500 that I was running beforehand wasn't on the list of compatible CPUs, yet it ran fine with both. What worries me is that after upgrading the motherboard drivers(A few other results via Google said that it had worked), now NONE of my CPUs work, they all give the same issue, and with no beep codes.