BIOS Beep Codes for Intel® Desktop Boards

You can hear the beep codes through the onboard piezoelectric speaker. For Intel® Desktop Boards without the onboard speaker, you can hear the beeps through a speaker attached to the line out audio jack on the board.

Beep Code	Sequence/Pattern	Meaning	Troubleshooting Steps
Single beep	One 0.5 second beep	F2 Setup / F10 Boot Menu prompt	This short beep occurs when the BIOS is ready to accept keyboard input. No action needed.
2 beeps	On-off (1.0 second each) two times, then 2.5-second pause (off). The pattern repeats once. Then the computer continues to boot.	Video error (no add-in graphics card installed)	Reseat add-in graphics card. Make sure a compatible processor is installed. Related topics No video and two beeps during boot Intel® Processors and Boards Compatibility Tool
3 beeps	On-off (1.0 second each) three times, then 2.5-second pause (off). The pattern repeats until the computer is powered off.	Memory error	Reseat the memory. Make sure that the contacts on the memory and the socket are clean. Try removing one bank of memory modules at a time. (Some systems can require a memory module in Bank 0.) Try using memory modules from the same manufacturer with the same part number and speed. Check for a faulty memory module by trying the memory in a known good system.
High/low beeps	Alternate high and low beeps (1.0 second each) for 8 beeps. Then the computer shuts down.	CPU thermal trip warning	Check that the processor heatsink/fan is properly installed. Check that the thermal interface material is sufficient and is spread evenly.