YES,it is motherboard issue,I had the exactly

来源: 于 2007-12-18 10:59:31 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

same experenice on compaq.

I seached the mother board serial and bought a motherboard on ebay, after replace the mb, problem solved.

It is a very well known problem.