Beep Codes
4-4-2-1
4-4-2-2
4-4-2-3
4-4-2-4
1 long,
2 short
Service Manual
POST Description
Output one beep
Clear Huge Segment
Boot to Mini DOS
Boot to Full DOS
Improper video configuration (reprogram EEPROM) or external ROM checksum
failure
Troubleshooting and Diagnostics
3-27