XP 2400+ and K7T266A

[Dan0368]

I have this motherboard:

K7T266 PRO 2U

and as you can see, it supports up to Athlon XP 2600+'s and above. I'm upgrading from a 1600+, and when I snap the new processor in (2400+), I get no image or POST or anything. Everything runs and gets power, but that seems to be about it. I've cleared CMOS, and also updated the BIOS to no avail. I'm kinda stumped here, any ideas?

Thanks for any and all help.

This table also shows that the CPU and motherboard are compatible

Compatability Table

 

[LiLithTecH]

Do all the Diagnostic LEDs Light?
Does the PC still POST with the OLD CPU?

If so, then RMA the CPU.

Also, you did remember to pull the power cord out
when installing the CPU and Clearing the CMOS, correct?