After booting up, the host has 4 alarm sounds, and the computer can t be turned on, and the host has

Step 1: First of all, according to the specific situation analysis, if there is no power response directly, then check whether there is a power supply, poor contact, hardware and other problems, go to the second step, if it is not possible to enter the system may be operating system or software problems to go to the third step.

Step 2: Check whether there is a power supply problem, first see if the power supply is not plugged in well or there is a problem with the plug, if you are using a battery, then plug it in and try again. You can go to a friend or go to a computer repair shop or sales store to find the same model of power supply to try it.

After replugging the power supply, press the power button again, and if it still can't be turned on, then press it for a while. If you change someone else's power supply to turn on, it means that there is a problem with the power supply, if it proves that there is no problem with the power supply, it may be the hardware reason, go to the fifth step.

Step 3: Go to the last correct configuration to adjust, turn on and press and hold F8, enter the advanced options page, select "The most recent correct configuration", and press Enter. If it can enter the system, it may be caused by viruses, incompatible hardware drivers with the system, or operating systems.

After entering the system, run the anti-virus software, check and kill the virus, if there is a virus, restart the computer after the anti-virus, if it is not normal, it may be caused by the incompatibility of the device driver and the program, delete the graphics card, network card and other drivers, restart it after removing the driver, if there is still a problem, then go to the next step.

Step 4: Repair and install or reinstall the system, set "Optical Drive as the first boot device" in the BIOS, then insert the system disk, and press the R button to perform "Repair and Installation". If the fault persists, just at the beginning of the system, select "One-click GOST to restore the system" or use the system disk to reinstall the system.

Step 5: Check whether there is a hardware problem, disassemble the notebook to see if the hardware is loose, generally the hardware is not plugged in well, there will be an alarm sound, the long sound continues to sound that the memory module is not plugged in tightly, one long and one short means that the memory or motherboard has a problem, one long and two short means that the graphics card is wrong. If there is too much dust inside the notebook, it is best to clean it up first.

In addition, pay attention to whether it is caused by the new hardware, if it is normal before the replacement of the hardware, and it is not normal after the replacement, then check whether it is compatible. If it can't be started at this time, it is best to send it for repair, and the professional will check whether there is a problem with the hardware one by one.

CPU when 4 down due to excessive heat.

It's nothing, the temperature protection is running, and you can press any button to enter the system and check the heat dissipation of the fan and the case.

Are your four voices one long and three short!

If this is it, it's a keyboard controller error!

Check the motherboard to see if the jumper on the keyboard is plugged in!

The question you said later has nothing to do with this!

Probably the motherboard is bad to pull 1

Unplug the CMOS battery and restore it to see!

When the computer is turned on and the host sound is abnormal, first check whether the power supply of the computer is normal, and check whether the hard disk or graphics card of the motherboard is loose.

The computer doesn't turn on and doesn't light up, and the host alarms 4 times, what's wrong? Judging from the situation described, this kind of story is a common occurrence in computers, you can turn off the computer and unplug it, then remove the computer's memory module, wipe the metal insert of the memory module with alcohol, plug it back in, and then start it again, and this phenomenon will disappear.

Problem: An alarm sound may indicate that the memory module is incompatible, damaged, or loose.

Method: Turn off the power, unplug the memory module, wipe the memory module with alcohol, then plug it back in, turn it on, or try to change it to a memory module of the same model.

There is a horn alarm sound when the computer is turned on, you need to check whether the memory module, graphics card, and CPU are loose, and clean up the dust on the card slot.

This is a hardware error.

Your description is not very clear, different motherboard alarm sounds have different meanings, for Award BIOS, 1 long and 3 short alarm sounds are "keyboard controller error". For the AMI BIOS, 4 short is "System Clock Error". For Phoenix BIOS, 1 short, 1 short, 2 short, 2 short, is "Motherboard Error", 1 short, 2 short, 1 short is "System Clock Error".

It is generally caused by the memory module, you can unplug the memory module and wipe it, and then reinstall it with the gold finger, if it doesn't work, change the memory module and try again and again.

In this case, you should check the memory module first.

If it is multiple memory modules, remember the order of memory modules, and you can also insert the memory modules separately, and you can try to insert other memory modules after turning on the single one, so as not to make the memory modules incompatible.

This needs to judge how loud the sound is, so that you can judge that there is a problem, and if you don't judge it, you can unplug the graphics card and memory, wipe the gold finger and then install it.

This is the sound of the memory alarm, which is generally due to loose memory, poor contact between the gold finger of the memory and the memory slot, oxidation of the gold finger of the memory, and failure of a chip in the memory.

1. Generally, this situation is caused by the oxidation of the gold finger or poor contact of the memory.

2. In this case: unplug the computer power cord first, press the on/off button on the chassis 5-6 times to release the residual charge of the motherboard; Then open the side panel of the chassis and plug and replace the slots of the memory. Remove the CMOS battery from the motherboard and install it after 1 minute. The computer has a discrete graphics card, it is best to plug and unplug the graphics card, and after the above operations are completed, the computer will be powered on again.

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6.When pressing the three keys "Caps Lock" and "Num Lock" and "Scroll Lock" in the Win system, the PC speaker of the host computer has a "Di" similar key sound.