AMD Processor model unknown, Please Help!

Hello,

I have recently bought and installed a new processor however it is not working correctly. The model that I bought was an AMD Phenom II 3.6 GHz x4 975 Black Edition. I am having the following 2 problems with it which I am pretty sure are related.

1. Under System Info the processor is listed as Processor: AMD Processor model unknown 803 MHz and under the BIOS the processor is also listed as model unknown 800 MHz

2. The processor is only running at ~800 MHz not 3.6 GHz (I have tested this using 3 programs)

I have checked the task manager and all 4 cores appear to have activity on them and all windows operations are working fine. I have checked device manager to make sure that there were 4 drivers and that they were up-to-date (all 4 displayed as AMD processor model unknown). I also have downloaded every windows update just incase that was a problem. I have searched online extensively to find a solution to this and the 2 main responses that I have found are:

1. The BIOS needs to be updated

2. Turn off Cool n' Quiet in BIOS or put power settings to High Performance.

In response to this I checked for a BIOS update but could not find one. I checked in the BIOS for a Cool n' Quiet option and there was none, however I did set my power setting to High Performance.

Please if any of you know how to fix this problem let me know. Here are my system specs:

-
Windows Vista 64-bit SP2
Manufacturer: HP
Model: a6655f
RAM: 5 GB
Processor: AMD Phenom II 3.6 GHz x4 975 Black Edition
Core Speed: 803 MHz
Multiplier: x4.0
Bus Speed: 200
Cores: 4
Threads: 4

Motherboard: Pegatron Corporation NARRA3
Chipset: NVIDIA MCP61
BIOS: Phoenix Technologies, LTD
Version 5.14
Date 06/20/2008