AMIBIOS is a kind of BIOS manufactured by American Megatrends (AMI). Many popular motherboard manufacturers have integrated AMI’s AMIBOS into their systems.
Other motherboard manufacturers have created custom BIOS software based on the AMIBIOS system. The beep codes from AMIBIOS-based BIOS may be exactly the same as the true AMIBIOS beep codes below or they may vary slightly. You can always reference your motherboard’s manual if you think this might be an issue.
Note: AMIBIOS beep codes are short, sound in quick succession, and usually sound immediately after powering on the PC.
1 Beep
A single beep from an AMI based BIOS means there has been a memory refresh timer error. The solution is often to replace the RAM in the computer.
2 Beeps
Two beeps means there has been a parity error in base memory. This is an issue with the first 64KB block of memory in your RAM. The solution is usually to replace the memory.