BIOS audio signals

BIOS audio signals can "tell" an experienced user aboutmalfunctions of his personal computer. But these signals need to be able to correctly decipher. The Country of Councils will tell you about the values of the audio signals of the main BIOS versions.

The BIOS, among other things, is responsible for initial testing of computer components (POST). The BIOS reports the results of the test by sound signal, which is reproduced thanks to the built-in dynamics. The BIOS beeps differ in duration. By a combination of these signals, a malfunction can be determined.

The BIOS sound signals are different for different BIOS brands. The most common BIOS versions are AMI BIOS, AWARD BIOS and Phoenix BIOS. To determine which BIOS you have, you need to go to BIOS Setup: the brand name will be written at the top of the screen. In addition, the brand is written on the BIOS chip, which is on the motherboard.

Phoenix BIOS audio signals

Signal	Explanation
1-1-3	The problem of reading or writing data from / to CMOS memory
1-1-4	BIOS content checksum error
1-2-1, 1-2-2, 1-2-3, 1-4-1, 1-4-3	Problems with the motherboard
1-3-1, 1-3-3, 1-3-4, 1-4-2, 4-3-1	Problems with initializing RAM
1-4-4	The problem of reading or writing data from / to the I / O port
2-1-1 - 2-1-4, 2-2-1 - 2-2-4, 2-3-1 - 2-3-4, 2-4-1 - 2-4-4	Malfunction of the first 64 Kbytes of RAM
3-1-1, 3-1-2, 3-1-4	Error initializing DMA controller
3-2-4, 4-2-3	The problem with initializing the keyboard controller
3-3-4, 3-4-1, 3-4-2	The problem with initializing the video card / accessing the monitor
4-2-1	The problem with initializing the system timer
4-2-2	Completion of testing
4-2-4	Critical error of transition of the CPU to the protected mode
4-3-2, 4-3-3	Problems with initializing the first and second timers
4-4-1, 4-4-2	Problems with initializing a serial or parallel port
4-4-3	Problems with the initialization of the mathematical coprocessor
An uninterrupted long signal	Malfunction of the motherboard
Siren, moving from high to low frequencies	Video card malfunction
Continuous signal	CPU cooler malfunction

AMI beeps

Signal	Explanation
Short signal	The computer is fully functional, no errors
No signal	CPU Malfunction
1 long signal, 2/3/8 short	Problems with video card or monitor connection
1 long beep, 1 short	Defective power supply unit
2 short beeps	Problems with RAM or not turning off the printer or scanner
3 short beeps	Problems with RAM
4 short beeps	Problems with the system timer
5 short beeps	CPU Fault
6 short beeps	Problems with initializing the keyboard controller
7 short beeps	The motherboard is defective
8 short beeps	Problem with video card memory
9 short beeps	Invalid BIOS checksum
10 short beeps	Problems with writing to CMOS
11 short beeps	Problems with the motherboard cache

Sound signals AWARD BIOS

Signal	Explanation
1 short beep	Download is successful
1 short beep, 1 long	Problems with memory
2 short beeps	Minor CMOS problems
Repetitive short signal or continuous signal	Defective power supply unit
1 long beep, 2 short beeps	Defective graphics card
1 long signal, 3 short	The problem of initializing the keyboard controller or a problem with the graphics card
1 long signal, 9 short	Problems with reading from ROM
3 long beeps	The problem of initializing the keyboard controller
Repeated long signal	The memory is defective
High and low frequency are repeated	Faulty CPU

If you know the BIOS beeps of the correct version, you can always identify the problem and mend your computer, having repaired or replaced a necessary detail.