Compaq AP200 - Professional - 128 MB RAM Reference Manual page 148

E-10 Error Codes
Power-On Self-Test Messages
Flashing Caps Lock
Flashing Scroll Lock
Message Beeps*
1L, 2S
2L, 1S
NOTE: If you have replaced the standard keyboard with a Universal Serial Bus
(USB) keyboard, you will hear the beep sequences for these error codes but
will not see the flashing lights.
Continued
Probable Cause
Video controller not present or
incorrectly initialized
System board hardware failure
(prior to video)
Recommended Action
1. Clear CMOS.
2. If video card has
been added,
remove and reseat.
Replace system board.