Hi;Epox 8RDA3+ motherboard,Athlon 2600+xp 333mhz fsb. Barton chip.I have to do setup every so often,when left off for a while.when I go to boot up it defaults to 100mhz at post,and not showing as a 2600+cpu,and time and date defaults to july,ect.Run setup again and set all of these and It works ok.Then sit's and default's again..Is 166mhz what it should be in bios for a 2600+...I thought the battery was good in this board??but what else could it be.?