Product guide

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Chapter Five Problem Solving
Problems with Application
Software (continued)
q If other software runs correctly on the system, contact your vendor about
the failing software.
If the problem persists, the software may be incompatible. Contact the software
vendor’s customer service representative for help.
Bootable CD-ROM Is Not
Detected
Check the following:
q Is the BIOS set to allow the CD-ROM to be the first bootable device?
Error and Informational
Messages
When you turn the system on, POST displays messages that provide information
about the system. If a failure occurs, POST emits beep codes that indicate errors
in hardware, software or firmware. If POST can display a message on the video
display screen, it causes the speaker to beep twice as the message appears.
Port-80 Codes and Countdown
Codes
After the video adapter has been successfully initialized, the BIOS indicates the
current testing phase during POST after the video adapter has been successfully
initialized by outputting a 2-digit hex code to I/O location 80h. If a port-80h ISA
POST card is installed, it displays the 2-digit code on a pair of hex display LEDs.
POST Error Codes and
Messages
The error codes and messages are representative of various conditions BIOS
identifies. The exact strings and error numbers may be different for each BIOS
version.