Sooooo, I did everything as you advised me. Build it up on the bench bit by bit and the problem still persists.
I got mad and took parts in the service. People in service test parts about ten hours and the result is everything is fine :-(
The only difference. They used Win 7 Pro I used Win 7 Home Pro, They used 2GB Kingstone and I used the same ram but 4GB. They used driver from original cdrom and I used latest driver from internet. They make BIOS to the DEFAULT setting.
So that's about all.
I'm really embarrassed.
P.