Well I have an HP Pavilion 7955 and I wanted to upgrade the cpu. I bout a 3GHZ to put in up from the 1.5GHZ. Its P4 Socket 478-400MHZ FSB. When I did this the cpu was still running at 1.5GHZ. I tried a few overclocking programs to no aviel. I tried updating the bios forever and that never worked. Come to find out HP decided to leave out the fact that your motherboard might not be the same as the one listed. Its listed as Asus mobo with Amazon bios but some people got a Dublin mobo with phoenix bios. Yay! None them couldve mentioned that before, but it seems most of the reps dont know this and Hp does provide info on it. The only thing for bios update i can find is from phoenix tech or whatever and you have to pay to get in. What I need help with is knowing if anybody else has this same prob or has heard of it. I need to upgrade my cpu, bios if needed, and find my exact mobo specs. I used everest and speccy which is how i found out i had a diff mobo and I cant really find my mobo. All help welcome. Oh yeah! when i finally figured this all out and talked to an hp rep all he did was confirm this and then tell me my pc is old, there are no updates, and to buy a new one from them. considering its 11 years old i think its running pretty damn well.