Peak 555A User’s Guide
BIOS Setup 4-
40
BIOS Reference - POST Message
During the Power On Self Test (POST), if the BIOS detects an error requiring you
to do something to fix, it will either sound a beep code or display a message.
If a message is displayed, it will be accompanied by:
PRESS F1 TO CONTINUE, CTRL-ALT-ESC OR DEL TO ENTER SETUP
POST Beep
Currently there is only one beep code in BIOS. This code indicates that a
video error has occurred and the BIOS cannot initialize the video screen
to display any additional information. This beep code consists of a single
long beep followed by two short beeps.
Error Messages
One or more of the following messages may be displayed if the BIOS
detects an error during the POST. This list includes messages for both
the ISA and the EISA BIOS.
CMOS BATTERY HAS FAILED
CMOS battery is no longer functional. It should be replaced.
CMOS CHECKSUM ERROR
Checksum of CMOS is incorrect. This can indicate that CMOS has
become corrupt. This error may have been caused by a weak battery.
Check the battery and replace if necessary.