A reason for diagnosing the card running C0

A model of P41BMD 845 motherboard, can be lit, but there are some problems. The board itself is dirty, washed with washing powder, drying, the results are not lit, diagnostic cards run C0.

Looking for a reason to start. About a few 10 minutes later, after the boot unexpectedly skipped the C0, all the way running code light, and then has been normal.

　　Analysis Reason:

Should be the CPU seat inside the pins have moisture, resulting in short pins, moisture dry after the good. In other words, the CPU block PIN short circuit is running C0 one of the reasons.