KT4V won't recognize correctly XP2600+ (FSB 333)

Question

Hello,
I have the following configuration:
MSI KT4V, BIOS 1.8
AMD Athlon XP2600+ FSB 333 (Tbed core as CPU-z says) BOXED version (with AMD fan)
512MB DDR400 memory (MSI recommended brand)
MSI-8888 gfx card (NVIDIA GeForce4 MX440 AGP8x)
350W psu
The problem is that after setting the FSB to 166 in BIOS, the BIOS recognizes the frequency of the CPU to be 2133MHz where on the box AMD states that the processor operates on 2083MHz. No matter what FSB number I enter, the processor speed is incorrectly recognized at 2083MHz.
Memory speed is recognized at 333MHz (which is normal, as said somewhere else in this forum) with CAS latency of 2.5.
Now, when I try to install Windows XP Pro SP1, right after the kernel initialization (during setup), I get a BSoD with error 0x0000007E (or something) and stops. I can only perform an installation if I set the FSB to 155MHz, underclocking the processor.
Now the funny thing: Windows 2000 install absolutely fine using the FSB setting to 166, where XP fail.
I tend to believe that this is some BIOS fault because of the incorrect CPUP frequency detection and the rest.
Please HELP me! Many thanks in advance.

Answer 1

Quote
Originally posted by wonkanoby
AXDA2600DKV3C AXDA2600DKV3D
if you set fsb to 100 what speeds it say it runs at,ie what multiplier is it using by default
When the multiplier is set to 100MHz, CPU speed is 1300MHz, so the multiplier is 13.0x -> 333MHz FSB CPU. Plus the code on the CPU is AXDA2600DKV3D.
I've done some research on the internet and the exact STOP error is 0x0000007F followed by four 0x00000000's (Division by zero, DIV). This indicates a hardware failure or a software failure or a misaligned memory (according to M$ info). Tried my parts (CPU, memory) on a Gigabyte M/B, worked fine and correctly identified so it must be a BIOS bug on KT4V AMIBIOS 1.8.
According to Micro$oft, the error also appears on overclocked systems, that go beyond CPU limits. My system runs at 2133MHz with a 333MHz FSB which means it's 2133-2083=50MHz overclocked. The problem is that I'm not trying to overclock the CPU; the BIOS configures it incorrectly and clocks it at 2133MHz instead of 2083MHz. Tried to change multiplier, but it's no avail since it's locked to 13.0x.
The only way I can install XP is by pressing F5 during the "Press F6 to select a SCSI..." message, where I select that the PC is a "Standard PC" (No ACPI whatsoever). I do not know however if I'm risking the integrity of my CPU as it's now overclocked beyond it's factory suggested frequency of 2083MHz.