Question about MSI K7T266 Pro2 (MS 6380-060) Motherboard

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Hav K7T266 Pro2 motherboard, can not get it to go past turning on

I have tried three different processors with this board, the last being a known good AMD 900 mhz processor. The 4 red lights still stay lit on the board as if the processor is no good. Could something on the board being jumpered or not jumpered cause this. My understanding from the book is it is automatically set a 100 mhz bus speed, but can be changed to 133 mhz in the bios. Please help if you can. Thank you.

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  • lorna7456 Jan 30, 2009

    Stephen, I cleared the cmos and now it boots to point of real time clock error. On the motherboard I found sw1 which also says 1-2 for 100mhz or 2-3 for 133mhz, however it has no pins.... The manual says The default hadware configuration for cPU clock freq. is set at 100 mhz. Therefore, to use a 133 mhz cpu and have it run at 133 mhz you need to adjust the cpu clock up to 133 mhz by changing the cpu clock in the bios setup utility.....If I can't get to the bios I can't change it...any ideas???

  • lorna7456 Jan 30, 2009

    Sorry, I didn't see well enough that the monitor did bring up the prompt, For now everything is going well.....Thank you very much,,duh me, not clearing the bios...



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to change bus to 133 MHz, you need to unlock the speed by setting a corresponding jumper on the board to assign busspeed by bios. After doing so, you need to clear CMOS and reboot. Next you'll have to set speed and multiplier in bios. Ideally: 900MHz = 100 x 9. Alternatively: 133 x 6.5 If that doesn't help...check if your RAM-modules are any good anymore. When RAM is not functioning, CPU-error code may be presented, since CPU cannot read/write to RAM, therefore not function. Let me know how this turns out.
Kind regards,

Posted on Jan 30, 2009

  • Stephan Hubers
    Stephan Hubers Jan 30, 2009

    Sounds to me like your onboard crystal has died. Therefore there won't be any clock-speed set at all. I once had a K7-board with the same problem. Can't fix that. Will need a new board. If thinking about that new board...I have a Gigabyte K8NS lying here (used with a Sempron 3000+ socket 754 cpu). If you're interested in the board, let me know.

    sorry your board has died... :-(

    kind regards,




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