[sqk7744]

Hey Muppet,

Couple things:

What is the main reason for the upgrade? CPU, FSB, RAM, GPU, HD's?
Have you been updating the; bios, chipset and drivers all along?

1. When upgrading you'll have to see what current hardware you have is proprietary to HP and your pavillion motherboard aka mobo. You may end up changing lots more than the board.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00757531&lc=en&cc=it&dlc=it&prod uct=3254009〈=it#

2. Are you upgrading to a newer pavillion mobo?

3. Keep an eye on the Powersupply as this may need to be upgraded too.

4. If adding lots more ram is not an option you may want to do a upgrade vs. buy another machine comparison.

Just some points to keep an eye on.

Good luck!
-sqk