thanks for reply.
What I did 1) tested without fan and burned the CPU. 2) bought a new matherboard with CPU (1.6g duron) for $69.99 and fixed the problem.
Thx all for your help.
Finally you burned your CPU like I warned you. You know what? I burned a few AMDs already. My computer started to reboot abnormally again this week due to heat issue. I replaced the CPU fan with another POWERFUL fan and right now got the temperature down to 42C. Everything is doing good now. Hopefully, I don't need to upgrade the fan in 1 or 2 months. --> AMD cpu sucks!
I dont know. I just feel the celeron is slow and Duron was working well. Let's see this time. Plus I bought at special, MB + CUP = $69.99, a big deal. hehe. maybe cheap is bad