I have an Asus P5K-E board.
https://www.asus.com/Motherboards/P5KEWIFIAP/
It starts, detects 7 GB of RAM and works completely normally with Intel Pentium 4 631 cpu. However, it doesn't start with e8500, e3400 or Xeon E5440. CPU remains completely cold, like it doesn't start at all, motherboard...