Why does the computer beep 30

The following is a list of commonly used machine BIOS alarm prompts:

Award BIOS Boot Alarm Sound Judgment Fault Method 1 Short: The system starts normally.

2 Short: Regular error.

1 long and 1 short: RAM or motherboard error.

1 long and 2 short: The monitor or graphics card is wrong.

1 long and 3 short: The keyboard controller is wrong.

1 Long 9 Short: Motherboard Flash RAM or EPROM error, BIOS corruption, repeated long ring: The memory module is not plugged in tightly or damaged.

Repeated, short ring: There is a problem with the power supply.

Award BIOS should be the BIOS for most computers, and it is recommended to judge your machine according to this!

Also: Poenix BIOS Alarm Sound:

1. Short: The system starts up normally.

1 Short 1 Short 1 Short System power-up initialization failed.

1 short, 1 short, 2 short, motherboard error.

1 short, 1 short, 3 short, CMOS or battery failure.

1 Short 1 Short 4 Short ROM BIOS verification error.

1 Short 2 Short 1 Short System clock error.

1 Short 2 Short 2 Short DMA initialization failed.

1 Short 2 Short 3 Short DMA page register error.

1 Short 3 Short 1 Short RAM refresh error.

1 Short 3 Short 2 Short Basic memory error.

1 Short 3 Short 3 Short Basic memory error.

1 Short 4 Short 1 Short Basic memory address line error.

1 short, 4 short, 2 short, basic memory verification error.

1 Short 4 Short 3 Short EISA sequencer error.

1 Short 4 Short 4 Short EISA NMI port error.

2 Short 1 Short 1 Short First 64k basic memory error.

3 Short 1 Short 1 Short DMA register error.

3 Short 1 Short 2 Short Main DMA register error.

3 Short 1 Short 3 Short The main interrupt handles register errors.

3 Short 1 Short 4 Short Handle register errors from interrupts.

3 Short 2 Short 4 Short Keyboard controller error.

3 Short 1 Short 3 Short The main interrupt handles register errors.

3 Short 4 Short 2 Short Error is displayed.

3 Short 4 Short 3 Short Clock error.

4 Short 2 Short 2 Short Shutdown error.

4 Short 2 Short 3 Short A20 Door Error.

4 Short 2 Short 4 Short Protected Mode Interrupt Error.

4 Short 3 Short 1 Short Memory error.

4 Short 3 Short 3 Short Clock 2 Error.

4 Short 3 Short 4 Short Clock error.

4 short 4 short 1 short serial port error.

4 short, 4 short, 2 short, parallel port error.

4 Short 4 Short 3 Short Digital coprocessor error.

Electromagnetic interference, turn down the volume of the microphone.

There is a problem with the built-in microphone of your laptop!

It is estimated that there is a string of lines.

Summary. Boot alarm: 1 short:

The system boots normally. 2 Short: Common mistakes.

1 long and 1 short: There is an error with the RAM or motherboard. 1 long and 2 short:

Wrong monitor or display card. 1 long and 3 short: The keyboard controller is wrong.

1 Long 9 Short: Motherboard Flash RAM or EPROM error, BIOS corruption. Repeat the long ring:

The memory module is not plugged in tightly or damaged. Repeated, short ring: There is a problem with the power supply.

Solution: 1. Check the hardware installation, especially whether the graphics card and the memory module are in poor contact. 2. Check whether the power supply is unstable or the capacity is insufficient.

3. Check the compatibility between the hardware. Machine hardware can be reassembled with minimal system configuration. The so-called minimum configuration is to install only the motherboard, CPU, memory module, graphics card, floppy drive, and keyboard.

See if the machine can start normally, if the smallest system is working properly, install the other components one by one, and find out the hardware fault 1. Insufficient ATX power supply. It is manifested as slow start-up and repetitive, crashing, automatic shutdown or restart during operation. Use the replacement method to find a good ATX power supply and replace it.

Heat dissipation issues. Open the case cover to see if the CPU cooling fan is too slow and if the cooling slot is.

The laptop does not start normally and has a buzzer alarm all the time.

Boot alarm: 1 short: the system starts normally.

2 Short: Common mistakes. 1 long and 1 short:

There was an error with the RAM or motherboard. 1 long and 2 short: The display or graphics card is wrong.

1 long and 3 short: The keyboard controller is wrong. 1 long and 9 short:

Motherboard flash RAM or EPROM error, BIOS corruption. Repeated, long-ranging: The memory module is not plugged in tightly or is damaged.

Repeated, short ring: There is a problem with the power supply. Workaround:

1. Check the hardware installation, especially whether the graphics card and the memory module are in poor contact. 2. Check whether the power supply is unstable or the capacity is insufficient. 3. Check the compatibility between the hardware.

Machine hardware can be reassembled with minimal system configuration. The so-called minimum configuration is to install only the motherboard, CPU, memory module, graphics card, floppy drive, and keyboard. See if the machine can start normally, if the smallest system is working properly, install the other components one by one, and find out the hardware fault 1. Insufficient ATX power supply.

It is manifested as slow start-up and repetitive, crashing, automatic shutdown or restart during operation. Use the replacement method to find a good ATX power supply and replace it. Heat dissipation issues.

Open the case cover to see if the CPU cooling fan is too slow and if the cooling slot is.

Try to go to the physical store for maintenance, and don't disassemble the machine without permission and cause greater losses. Good.