I tried removing the processor from the hardware list, but no luck there. I think this is because Win7 uses the same driver for the "new" hardware it finds.

Just to be sure that im not mistaken, does the Intel Pentium 4, 2.4 GHz, type northwood exctually use Hyper-threading? This may sound weird, but I can't find any documentation on the web that says it does.

This is more specified info about my CPU:

CPU Properties:
CPU Type Intel Pentium 4A, 2400 MHz (4.5 x 533)
CPU Alias Northwood, A80532
CPU Stepping C1
Original Clock 2400 MHz
L1 Trace Cache 12K Instructions
L1 Data Cache 8 KB
L2 Cache 512 KB (On-Die, ATC, Full-Speed)

CPU Physical Info:
Package Type 478 Pin uPGA
Package Size 3.50 cm x 3.50 cm
Transistors 55 million
Process Technology 6M, 0.13 um, CMOS, Cu, Low-K
Die Size 131 mm2
Core Voltage 1.475 - 1.55 V
I/O Voltage 1.475 - 1.55 V
Typical Power 38.7 - 82 W (depending on clock speed)
Maximum Power 49 - 103 W (depending on clock speed)