Centrino 1.5 GHz Stuck at 600Mhz!

Hi, I read this question on itmob.com. Anybody here know how to fix it??

I tried to swap the P-M 705 for a P-M 745 (1.8GHz 2MB L2) but it would not work at any higher than 600MHz, so I thought it was just not compatible, so I returned it. But when I swapped the 1.5GHz back in, it too would no longer go higher than 600MHz.
I did a format after each time I changed processors. I downloaded the latest chipset utility from intel. I checked the BIOS if I can manually clock my processor. And I changed my power management scheme to minimal power management. But none of this helped.....
Please help with any suggestions you can offer.

Thanks guys, appreciate it

 

sounds like you need to increase your FSB to the processor's rated speed.

 

Try loading BIOS Defaults. If you can, please check if you didn't blow a sensor diode which tells the BIOS/CPU whether you're on AC or Batery Power. Seems to me that your CPU is being underclocked by the BIOS because it thinks you're on Batteries.