Why computer beeping

System board chipset failure: The chipset on the motherboard has failed. Replace the motherboard. If possible, replace the BIOS on the motherboard. Replace the CMOS or motherboard. If possible, replace the IC. Video vertical retrace failure: The video adapter has probably failed.

Replace the video adapter. Video memory test failure: The video adapter's memory has failed. Unable to initialize video: This is a video problem. Replace the video adapter first. If the problem persists, replace the motherboard. Video memory failure: There is a failure in the video memory. Beeps Meaning 1 short No error: The system is booting properly. Video error: Check the video adapter and make sure it's seated properly. If possible, replace the video adapter.

Reseat the card or replace it outright. However, if the computer fails the POST, the computer may generate a beep code telling the user the source of the problem. If your computer has an irregular POST or a beep code not mentioned below, follow the POST troubleshooting steps to determine the failing hardware component.

Determine the BIOS manufacturer for your computer's motherboard, then select the appropriate link below for beep code meanings. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes for your computer may differ slightly from those listed below.

However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary. However, because of the wide variety of models shipping with this BIOS, the beep codes may vary.

If more than one memory card is installed in your computer, troubleshoot each card one at a time. Make sure each card is fully seated in its designated slot. Disconnect all internal devices including hard drives, expansion cards, optical drives and card readers.

If the computer starts without internal devices connected, one of them may be defective. Reconnect each device one by one to determine which one is defective. Listen and note the beeps. For example, you might hear one long beep, two short beeps, a pause, another long beep and two short. Find the user manual for your computer or go to the support website for your computer manufacturer or the motherboard manufacturer if your computer is custom-built. Look up "POST beep codes" and diagnostic meanings that apply to your computer.

If the beep code points to a problem with the motherboard, you may need to replace the board. If the code indicates a defective component but the component is working, a defect on the motherboard may be causing an incorrect beep code.

Timothy Smithee is a technical writer specializing in internal operating procedures for IT and manufacturing support. He has written for diverse publications including "RV Lifestyle" and "Everyman.