New CPU, now unstable

[imported_MoNoGoAt]

I just installed my new Mobile XP 2400+ processor, and the system freezes before I can get to Windows. I also installed a new DFI Infinity NFII Ultra board last week, I was running my old cpu on it until I got my water cooling kit in the mail. It ran fine until I put in the new processor. It displays it as an unknown processor, is that normal? I booted into DOS fine, but can't get to Windows normally or into safe mode. I tried to repair the installation to see if it was a software problem, but it froze in the process. I tried giving it a little more voltage, underclocking it, and even overclocking it. Could it possibly be another compnent? Any ideas what would cause this?

Thanks

 

[imported_MoNoGoAt]

Oh, and the system runs fine if I keep it in the BIOS screen, and stays around 27C on both CPU and System Temps so I'm not overheating

 

[mechBgon]

It might be a good idea to update the motherboard's BIOS, because it does sound like the motherboard is a bit mystified at the mobile CPU. Also, am I understanding correctly that you're trying to re-use an existing Windows installation after swapping motherboards? That sometimes works if the chipsets are similar (nForce to nForce2, for example). What was the previous motherboard?

 

[imported_MoNoGoAt]

It worked fine with the new motherboard before I swapped CPUs, but the old one was an Asus A7N8X, after I blew my second one I decided not to get another Asus

 

[johnjkr1]

You need to make sure your new board actually supports that CPU. Some don't. Some require a bios update like mechbgon said.