As long as the BIOS recognizes the CPU version, it should work. If that CPU was offered as an option in that product line, you should be fine.
What makes you think the CPU is the defective component? CPUs don't fail all that often.
I'm just going off HP's blink codes diagnostics. My boss seems to think it's not the CPU due to the laptop actually powering on which I thought did seem strange. Could a defective CPU still power a laptop up? The fan runs 100% and there's just a black screen but the blinking caps lock shows it's a CPU fault.
I thought I'd buy a CPU from somewhere that accepts returns just in case.
When you removed the heatsink, did you remove the CPU as well? Prior to applying new thermal compound, did the heatsink go to max like it does now?
I tend to think you have a motherboard problem.
No I didn't remove the CPU. The fans have always been at 100% which I thought would mean a motherboard issue. We have various G6 laptops at work which are in bits but I'm pretty sure most are Intel models so that doesn't really help.
Nope. Just a black screen and the loud fan. Could be anything but I thought I'd start with the CPU.
That sounds like a CPU problem, when I tried to upgrade my CPU it did exactly that (though mine was probably a compatibility issue.)
That is what HP's website claims as it's blinking one light on the Caps Lock but It's not just ColGeek who thinks otherwise, I saw a thread on HP where the OP had the same problem (One blinking light) and replacing the CPU didn't work for him, but that's just one guy.