help with bios problems

[raw1982]

hi,
i just took out my modem to test it in another machine and then plugged it back in and then installed it ok and everything was fine. then about an hour later, i switched on my machine, it came up with two options at the first screen before getting into windows something like this, not sure though.
"
Bad? CMOS/???????
PRESS F1 FOR SETUP
PRESS F2 FOR ?????
"
cant remeber exaclty what it said, but i pressed one of them then it loaded straight into windows, it then started to find "Multimedia Audio Device", so i reset my machine to see if the problem would go away but then i noticed that it said my machine was something like 1000MHZ at the very first screen before getting into windows, it usually says 1400MHZ.
so then i took a look at my bios setup and noticed that all my onboard devices where now enabled which is why i was getting "Multimedia Audio Device" in windows coming up guess.
so by the looks of things i have some how reset my bios. why was this and what can i do to get it back? all my programs and everything in windows seems fine apart from in "system information" in "system tools" theres a lot less information there now.

windows 98 se
ECS K7S5A
AMD 1400 Athlon
256mb ddr
geeforce 2 gts/pro 64mb
sound blaster audigy
40 gb seagate
16x dvd rom
24x plextor
intel 56k modem

 

[HappyPuppy]

The CMOS battery is likely dead. This is a fairly common problem with the K7S5A. They used a very cheap battery. When the battery goes dead, every time you reboot your computer the BIOS will reset itself to default values because there is no power to the EEPROM chip to maintain your custum settings, ie. the FSB of your CPU reset itself to 100MHZ from 133MHz. Just go to Radio Shack or some such store and buy a new battery. They're only a few bucks. BTW, take your old battery with you to be sure you get the right one the first time.