Hello! I've been trying to upgrade my Abit board for quite some time now, but it seems like it's very fickle about what I put in it. It had been operating on an XP1700+ just fine, but the first XP2000 I put in it only posted twice @ 1250Mhz and then never again. The second 2000 I tried worked. Yippee! I now have a XP2100+ that will come up as a 1500, but refuses to post on the proper setting. It seems to sense the proper voltage (1.75) for the automatic setting in bios, but no love is found upon reboot. Pop the 2000 back in and all is right with the world. Is this a common problem with this mobo? I've already upgraded the bios to the latest rev, so that doesn't seem to hold the answer. I did use the Winders bios tool...should I try the boot disk method? Dunno if'n it would work, but I can't come up with anything else to try without thinking of firearms... Halp! Thanks, DS