I was having blue screens and the good boys in that section and here helped me narrow the problem down to the power supply or more likely the processor. A new supply didn't help so I got a new processor. Upgraded from the AMD Phenom II X4 920 to the 955. Here is a link to the product page on New Egg.
The computer is a HP Pavilion Elite m9660f
Anyways after hooking it up it gave me a CPU Fan Failure. I figured I might be able to bypass the problem with some bios setting, but if I try it says entering setup and then continues without entering bios.
I removed the fans from the heat sinks I held the old fan over the heat sink (just in case?) I was able to get to the boot failure screen (hard drive currently removed). Both fans have four wires while the mobo socket has three pins. The old fan's wires go bla, red, blu, yel; while the new one's go bla, red, yel, blu. I actually swapped the yellow and blue just incase the order somehow got screwed up.
I will appreciate any help you can give (and the help I have previously received)
As a side note, in googleing the problem I ran into other fan boot errors where the solution was to update the bios. As most of these were not serrious enough to cause boot failure and they could access windows I ignored them, since I have now got the old fan to "work" I will try to update the bios if I can find out how/there is an update available.