I know this an old topic, but I HAVE to comment.
1st,
When you use Heat Sink compound, only use an amount the size of a grain of rice!!!! NOT cover all the chip area. This is more than enough.
Any excess will only be squeezed out to cover the CPU and may flow onto the Motherboard.
2nd
In the bios set-up, where it says "Wait for F1 if error, NEVER, NEVER, NEVER Enable this option.
I had to scrap a perfectly good motherboard due to the motherboard not seeing the keyboard.