Did you update the bios before installing the new chip? The newer revisions of that chip need a new bios than the early ones.
Next I'd read over this and make sure you did EVERY step:http://www.tomshardware.com/forum/274745-31-step-step-guide-building
If still a no go, maybe something here might help:http://www.tomshardware.com/forum/261145-31-read-posting-boot-video-problems
If it was a bad chip, I'd expect some error beeps but if you don't have an on board speaker, you might not be hearing them.