Cannot disable EIST (Vista 64)

Hi there,

I have a small problem but I believe it may be the root cause of a bigger
problem. I use my machine for digital audio work so I really need speed
stepping turned off.

I have disabled EIST in the motherboard BIOS.

However, Vista 64 still appears to be stepping the cpu speed. (According to
CPUZ - I can actually see the cpu speed halving until I load the system).

Please not again: I HAVE DISABLED EIST on the mobo BIOS and Speed Stepping
does not appear ine th power options within Vista itself.

Thanks for any help or advice anyone can offer.

:-)

My system spec:

PC Hardware
CPU Intel QX6700 Extreme
Motherboard Intel D975XBX2
Memory 8Gb 667 DDR2
Graphics BFG nVidia8800 GTX PCI Express
PSU Enermax Galaxy DXX 1000 PSU
CPU Cooling Zalman CNPS9700
Main HDD Western Digital Raptor D10,000RPM SATA X4
External HDD Lacie External 500GB HD X2
Monitor Dell Ultrasharp 3007WFP-HC 30
Keyboard Logitech G15
Mouse Logitec MX1000
Game Controller Saitek X53 Pro

DAW Hardware
DSP UAD1
DSP TC Powercore MKII (awaiting x64 drivers)
Sound RME FireFace 400

Software
Operating System Windows Vista Ultimate x64
DAW Steinberg Cubase
DAW Steinberg Nuendo
DAW Steinberg Wavelab
DAW MEAP by Phil Pendlebury :-)