K7t266 pro v1.0 4 red leds

I just bought an 1800+ to put in my old k7t266pro but I get 4 red leds when I start it up.  It powers up as soon as I hit the switch on the PSU.  I tested the CPU in a friend's motherboard and it worked fine.  The k7t266pro was in working condition before I put it away for a few months.  I happen to have 2 of these boards and I get the 4 red LEDs on both of them.  I also tried different PSU's and only have the board, cpu, ram , and video card connected.  Any help would be appreciated.

If the first four letters of the OPN on the cpu is AXDA then the 1800+ is one with a Thoroughbred core, MSI says that the K7T266 Pro does not support it. It only supports the Palimino core.
That does not mean for certain that your cpu won't work.  Sometimes unsupported cpus will work in motherboards that do not support them.  Clear the cmos with the power cord unplugged from the power supply.  Set the clear jumper back correctly and plug back in the ac.  Then try to see if the motherboard will boot up.  If it does, you might see the cpu showing as an unknown cpu on the boot page. Go into the bios and do all of the settings manually for the cpu.  The cpu will still probably remain an unknown cpu but if it works, who cares?

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