Led Codes - HP 500B - Microtower PC Maintenance And Service Manual

Table B-1 Diagnostic Beep Codes (continued)
Beeps
4 short beeps, 3
second pause
5 short beeps, 3
second pause

LED Codes

The following table describes the LED states for the Compaq 500B and 505B MT Desktop PCs.
LED
Power LED Indicator
Drive LED Indicator
62 Appendix B Diagnostics
Diagnosis
Flashing operation has failed
(checksum error, corrupted image,
etc.)
BIOS recovery was successful
State
System on (normal operation)
Suspend to RAM
Computer off
Normal hard drive activity
Recommended action
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently added, remove it to see if
the problem remains.
4. Clear CMOS.
5. If the message disappears, there may be a problem with the
expansion card.
6. Replace the system board.
No action required.
LED Status
Steady green
Blinks green every 2 seconds
LED not on
Green drive LED is flashing