Thread: Different types of error beeps from the system speaker.

If you find that there is no system display after power on, you can define the problem, depending on the number of audio signals from the next table.
Number of beeps Meaning of error
1 DRAM refresh is not working.
2 Parity circuit is not working or parity status bits
are not cleared when parity is disabled.
3 First 64k memory test failure. Address line test (A0..A15) failure.
4 System timer is not counting properly.
5 Processor register/flag test failure.
6 8042 keyboard controller gate-A20 error.
7 Processor exception error encountered.
8 Display memory R/W test failure (NON-FATAL)
9 ROM-BIOS checksum error.
10 CMOS Shutdown Register R/W error.