What should I do if my computer fails to boot?

The solution to the problem that the computer host cannot start:

1. First: Check all the cables (including the power plug) to make sure all the devices are connected together correctly and tightly, and next, check if the power is on. Listen to the sound of the power supply fan and see if the hard drive is working properly.

If you don't hear anything, you may need to replace the power supply unit.

2. Try to clean up the dust inside the case. Passing through dust is the biggest killer of the computer, too much dust may cause the computer to crash frequently, and in severe cases, it may short-circuit the circuit, and then damage the computer.

3. Replug and unplug the hardware inside the computer case, especially the memory module, remove it after removing it, use an eraser or soft cleaning paper to remove the oxidizing substances on the surface of the gold finger, and reinstall it after thoroughly cleaning off the dust in the slot, and then try to boot it.

4. Open the back cover of the case, remove the CMOS battery, and discharge the BIOS to restore factory settings. Or go directly to the BIOS and go through the relevant options to restore to factory settings.

5. If the above methods do not work, it is possible that the motherboard or CPU is broken and needs to be replaced.

Check whether the CPU and heatsink have been moved, the CPU is overheated, and the motherboard detects that the CPU is over-temperature and the CPU is shut down protectively.

The low speed of the CPU cooling fan will also overheat the CPU, and the motherboard will detect the CPU overtemperature and shut down the CPU protectively.

Check whether the power connector is loose, whether the fast fuse in the power supply is blown or the power cord is broken.

There is a short circuit on the motherboard or machine, causing the power supply or motherboard protection circuitry to work.

There is a fault in the motherboard or the power supply is in poor contact with the motherboard connector.

The motherboard BIOS settings have changed.

Step 1: First of all, check whether the external wiring of the computer is connected, and plug in each cable again to see if the fault is eliminated.

Step 2: If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

Step 3: If not, then clean the dust off the motherboard and check if the computer is in good condition.

Step 4: If the fault persists, unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.

Step 5: If you can't turn on the computer, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

Step 6: If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, motherboard, etc. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.

Step 7: If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

The computer won't start? Simple operation to solve.

Check if the power supply is good first. Unplug the memory and turn it on to see if the host will make a sound, if there is a zzi sound, it means that the motherboard is fine, and then plug the memory into the slot and wipe the gold finger with an eraser or white paper. If it still doesn't work, it is recommended to try a new memory.

If the new memory still doesn't work, it could be a problem with the hard drive

You open the main chassis and plug all the plug-ins again, remembering not to touch the metal parts with your hands, so as not to conduct electricity to the human body and damage the plug-ins.

Don't forget that you can only operate it without turning it on, and unplug the power supply.

The motherboard light is on.

It means that the power supply is powered on normally. It can't be started when it is turned on. Explain that the boot key is partially faulty.

You can unplug the cable connecting the chassis to the motherboard·· Try it with a screwdriver or key to turn it on. If it can be turned on normally, it is a failure of the chassis boot key. If it can't be turned on, the hardware failure focuses on checking the power supply voltage part, and the motherboard.

Your memory and CPU are out of sync, try changing the memory. Check the external frequency of your CPU on the Internet, and then allocate a memory with the same external frequency. When buying memory, you should use big brands, such as Jinbang, Kingston, Apacer, etc., don't try to be cheap.

First of all, see if the plug-in cable in the case is loose.

1.Fan rotation means that there is no problem with your power supply.

2.You see if the hard drive is turning! You can feel it when you put it on your hard drive!

3.In my experience, most likely you have a memory problem! (You unplug the memory and try it on it).

4.The motherboard may not be very bad!

How much more money are you going to give an estimate! That's a bit harder!

I still don't know what the problem with your computer is**! It's really hard to estimate!

Having said all that, I hope it helps you!

It may be that the line is not plugged in well or loose, check whether a line is plugged in.

If the memory is suddenly like this.

You plug the memory back in.

Or try a good memory.

--CPU is none of its business.

Mainly check the driver, wipe the dust inside the gold finger and memory module.

There are two possibilities: First, it is powered on but cannot be turned on. 1. The problem may be in the motherboard (that is, the motherboard is broken); 2. It may be out of the hard disk (the disk track has been damaged, the file is destroyed); 3. System files are damaged (virus invasion or improper shutdown may cause system file damage); 4. The BIOS is not set to boot from the hard disk, and second, it does not power on.

1. Power supply problems; 2. If the power supply is in poor contact, you can check whether it is a problem with the power supply, if not, see if you can enter the BIOS to set it. If it doesn't work, you can only take it to a professional for repair.

Unplug the power supply.

Take the motherboard battery off.

I put it on again.

The motherboard is powered down.

If you can't get up.

It could be your case power.

Solution

1. First of all, see whether the computer host is connected to the power supply. If the power supply fan is turning or the power indicator is on, the power supply is on.

2. Next, open the main chassis to see if the CPU fan is rotating, if it rotates, it means that the power supply has been added to the motherboard, if not, observe whether the power switch is in poor contact.

3. If there is a long sound of dripping and dripping on the computer, it means that the memory is in poor contact and needs to be plugged and unplugged again. Until it doesn't make a sound, if there is a long sound of dripping and dripping no matter what, you need to change to the same model of memory module.

4. If there is no long sound of dripping or dripping, it means that there is a problem with the motherboard and the motherboard needs to be replaced.

5. If there is white text on the screen, it freezes or restarts, it means that there is a virus or hard disk failure in the computer, or the CPU is overheated.

6. There is also a kind of graphics card failure, although the host starts normally but there is no image output, so it looks like a black screen, like the host has not started, and the feature is that the hard disk light is flashing.

For pure hardware failures, non-computer experts should find someone to deal with them.

The software can try to fix the problem of semi-soft and semi-hard, but if it can't be fixed, you still need to replace the hard disk.

Reinstalling the system can also be solved.

Enter through the F8 safe mode and clean up the relevant startup items.

There are many situations in which it cannot be started, and each situation corresponds to many reasons

If there is no response when you press the power button, it is usually the power supply or the motherboard is damaged.

Pressing the power button has a power-on response but stops immediately, and the motherboard or CPU is damaged.

Pressing the power button has a power-up response, but nothing can be displayed, and the graphics card or motherboard is damaged.

Pressing the power button has a power-on reaction, but the tick sounds, this according to the law of sound (different motherboards are different), can correspond to CPU, memory, hard disk, motherboard, graphics card and other hardware damage.

There is a power-on reaction when you press the power button, and you can perform a self-test, but the self-test stops in the middle. According to the information provided by the self-test, it is generally a fault of the motherboard battery, hard disk, optical drive, keyboard and mouse.

If the self-test is passed, the boot device cannot be found, which is a hard disk fault, which may be a corruption of the boot sector of the hard disk, or the boot program of the operating system may be corrupted.

If the self-test passes, the Windows logo appears, or the boot selection menu does not continue, it is a system corruption.

After passing the self-test, the Windows desktop is stuck, which means that there is corruption or conflict in the startup program.

Method 1:First of all, judge whether the machine has started, press the num lock letter light to see if there is a response after turning on, 1, there is a response, congratulations, the machine is fine, please check the display circuit and display power and switch;

2.If there is no response, it will be very back, but don't worry about it;

Don't do anything, first go to the kitchen and touch the tap water pipe to let go of the static electricity on your body, and then come back to continue the operation: first of all, turn off the power and pull the plug, remove the motherboard battery (some motherboard batteries can not start normally when the motherboard battery is out of power, the detection method is a multimeter, if you don't have a tool, lick the bottom of the battery with your tongue If you feel slightly numb, it means that there is electricity, otherwise the battery should be replaced, and if the computer is not used for 2 years, you can skip the battery detection), and then unplug the memory, plug in the slot, you can use paper without brushing, and then plug it in, The battery is safe, the inspection tool is not left in the chassis, and the machine can start normally when the OK plug-in cable is powered on more than 70% of the time! Because the design life and service life of the hardware is very long, especially the CPU, it is difficult to break it unless there are external reasons.

Method 2:It is very likely to be a problem with the motherboard, remove the motherboard battery, discharge for about a minute, and then install it, turn it on, if you can't turn it on, see if the power fan turns on, generally the motherboard now has a diagnostic card, if there is no display on it, it is a problem with the power supply, this kind of problem I have encountered several times, and the battery is discharged.

If the computer can't start, it is recommended to put an electric test on the motherboard first, if it still doesn't start, you need to replace the accessories to test it.