X200: CPU frequency scaling not working in Windows 7 x64

Hi there, this is first posting here. Trust this issue has not been addressed before--if it has please redirect me to the post where this discussion happening.
Here is my hardware: X200, P8700, 2.53GHz, 4GB RAM, 7454-32U
I have just upgraded my RAM from 2GB and clean installed Windows 7 x64 (came with XP x86). I have also loaded all the drivers including the power manager driver and power manager from IBM/Lenovo support/download site. all hardware is working fine.
My only problem is that the fan is always on--running at about 3340RPM and blows all the time--temps are at around 42-46C. I have noticed that the CPU is quite, but firing at max all the time--does not scale down when no activity. tis happens when I select "power source optimized" on battery and on AC.
I have noticed that when in XP 32-bit, the CPU will come back at rest to 786MHz--and go up when needed.
Could someone please help me figure out what is goin gon here? I am so tired of looking and posting on other forums that I am about to go crazy. I love this machine, but my only issue now is this.
I have also checked the BIOS and set the CPU to "automatic" and Speed Step is on. I am using the latest BIOs version v3.11 Dec 2009.
Please help me.
Regards
S

Hi Jessica Thank you for the reply and also pointing me to the Upgrade Advisor links-Here is the output for the 64-bit Windows 7 Compatibility assessment--as you see there are no issues with Hardware compatibility. Also I have downloaded all the applicable drivers from Lenovo. The problem still persists.
if you could link me with the direct access to the power management related drivers from lenovo, ACPI and BIOS drivers I will appreciate a great deal. Also to mention, I have upgraded the BIOS Feb 2010 release, and also the Power manager driver to v3.12 (no fixes in fan speed and CPU freq scaling I am afraid.)
====================
Windows 7 Upgrade Advisor
Information about upgrading to 64-bit Windows 7
System
Details
Custom installation required
You'll need to perform a custom installation of 64-bit Windows 7 and then reinstall your programs. Make sure to back up your files before you begin.Go online to get important information about installing Windows 7 on a PC running Windows XP
Outlook Express
This program is no longer included in Windows 7. You can get similar programs for Windows 7 from other software manufacturers.Go to the Microsoft website to learn more
More info from LENOVO
LENOVO has a website that might give you more information about getting Windows 7 running on your PC.Visit the LENOVO website
Windows Aero support
Your graphics adapter supports the Windows Aero user interface.Go online to learn more about Windows Aero
CPU speed: 2.5 GHz
Your CPU meets the 1 GHz minimum requirement.
3.0 GB of RAM
Your PC meets the 2 GB minimum requirement.
81.9 GB free space available on C:
Your hard disk meets the minimum requirement of 20 GB free space for 64-bit Windows 7. Devices
Status
Details
Conexant 20561 SmartAudio HD
Conexant
Compatible
This device is compatible with Windows 7.
Intel(R) 82567LF Gigabit Network Connection
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB Universal Host Controller - 2934
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB Universal Host Controller - 2935
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB Universal Host Controller - 2936
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB Universal Host Controller - 2937
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB Universal Host Controller - 2938
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB Universal Host Controller - 2939
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293A
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293C
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) ICH9M/M-E 2 port Serial ATA Storage Controller 1 - 2928
Intel
Compatible
This device is compatible with Windows 7.
Intel(R) WiFi Link 5100 AGN
Intel Corporation
Compatible
This device is compatible with Windows 7.
Mobile Intel(R) 4 Series Express Chipset Family
Intel Corporation
Compatible
This device is compatible with Windows 7.
Mobile Intel(R) 4 Series Express Chipset Family
Intel Corporation
Compatible
This device is compatible with Windows 7.
ThinkPad Bluetooth with Enhanced Data Rate II
Broadcom
Compatible
This device is compatible with Windows 7.
=================================

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