I have replaced the motherboard in a HP Pavilion p6210y. I am using the same memory and CPU that came off the old motherboard. On boot, the system halts with an 'Unsupported CPU' error and then shuts off. If I press F2 (a bunch), I can get a 'Launch Repair/Start Windows normally...' menu. If I 'Launch repair...', the HP recovery dialogs runs. If I 'Start Windows', the machine shuts down during the boot up. I CAN boot the machine from the DVD and/or USB.
My research says that the problem should be corrected by flashing an up-to-date BIOS. I downloaded the HP package but so far have not found a CD that I can boot from - I have tried an OEM Win7 installation CD, UBCD and gparted - that will let me run the HP BIOS update package, sp46426.exe.
TL:DR - How do I update the BIOS on an HP Pavilion that gives 'Unsupported CPU' error and then shuts down?