Quote Originally Posted by sbinh View Post
I finally have my hand on E8400 on P5K Dlx board.
Unfortunately, system could NOT boot even if the board has latest BIOS (0809).

It booted and ran flawlessly with E6600 and E6400.

What should I do now? Please give me some advice.
Your CPU may be DOA. I have the exact combo and mine boots up right away without a single issue.