Beep codes vary according to the BIOS manufacturer. However, the fixes for various beep codes
are fairly uniform. The following codes apply to the AMI WinBIOS setup for most new Pentium
II and Pentium III systems.
1, 2, or 3 beeps—Memory failures. In all three cases, reseat the DIMMs. If the beeps
recur at boot, remove the DIMMs and ensure that the DIMMs' contacts and sockets are
clean, then reseat the DIMMs. If the errors continue, replace the DIMMs. Make certain
that the speed and voltage of the DIMMs are correct. If you still have problems, you
probably need to replace the motherboard.
4 beeps—The timer isn't operational. Replace the motherboard.
5 beeps—A CPU error. Replace the motherboard.
6 beeps—Gate A20 failure. Reseat the keyboard controller chip. If this fix fails, replace
the keyboard controller chip. If the socket is bad, you need a new motherboard.
7 beeps—A processor exception interrupt error. Replace the motherboard.
8 beeps—A video memory problem. Replace the adapter or the VRAM.
9 beeps—The BIOS ROM chip is bad. Replace the chip.
10 beeps—A shutdown error for the CMOS register. Replace the motherboard.