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Win XP pro 64x Mobile AMD athlon 64 processor 4000+ power management/Cpu speed issue

4332 Views 8 Replies 3 Participants Last post by  Aron Rohden
Hi everyone.

I am having a hard time with my laptop after it came back from a repair at the shop.

i installed win xp pro 64x and fully updated the whole thing.

my windows continues to claim that my processor works at a 800mhz at all times. i am able to launch games like EVE online and run all my programs but when i try to launch Hellgate London i get the message that i am not meeting the minimun requirements of 990mhz, it then proceeds to the game and i can log in to my account and play BUT the whole thing is in a super accelerated mode.

can anybody help me with this ? i already searched microsoft and google for solutions and cant seem to find anything

my AMD Power monitor says that i am running 2600mhz as i should be.

i have tried to change the reg key to 2600 mhz instead but this doesnt help.

i have also tried to install the newest amd drivers.

i have also tried to install SpeedSwitch to force my computer into max speed at all times (cpu goes slower when its not working)

please help me if u can i am totally out of ideas here.. :4-dontkno

// my system is the Fujitsu-Siemens Amilo A1667G laptop

Mobile AMD athlon 64 processor 4000+
ATI radeon mobility x700
1,5gb ram
the power management system is ACPI

thx in advance

Aron Rohden
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Boot to BIOS, Check the settings there.
Well if its showing the correct speed at POST It doesn't realy matter if windows knows what cpu type you have, it doesn't realy have optimalisations built in for it, so don't worry.
But ... AMD A64 cpu's need a driver so that the QnC function works under XP. Drivers can be downloaded here:,,30_182_871_9706,00.html .

Look for "AMD Athlon 64 Processor Driver for Windows XP and Windows Server 2003 Version (exe) 1.3.1"
Sometimes this is a power saving mode. once there is load, the processor auto bumps up the multiplier... check your power settings and turn them off (performance).
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