The computer won t start, there is a fan working, the screen is as follows, how to solve it?

Analysis: The computer shows a disk read error. If the CMOS boot item has not been modified before, it is generally due to the failure of the hard disk to pass the power-on self-test due to poor contact or damage, or the main boot record of the hard disk is damaged, or the host inserts a non-boot disc or USB flash drive.

Solution: 1. Turn off the power and open the chassis, re-plug the hard disk power cord and data cable (if it is a laptop, you only need to re-insert the hard disk), then turn on the computer, press the del key (notebook is F2 or other) to enter the boot tab in CMOS, and see if the hard disk information can be detected. If possible, set the drive as the first boot item.

Press the F10 key to save and press the Y key to exit the restart.

2. If the hard disk is detected but still cannot boot, then use the system USB flash drive or CD to boot the computer, run DiskGenius to detect the hard disk and rebuild the master boot record MBR.

3. If the above operations are invalid, you need to reinstall the system. There are many ways to reinstall the system, and it is recommended to reinstall the disc system.

4. If the hard disk cannot be detected, replace the power cable and data cable of the hard disk, replace the hard disk if it is invalid, and reinstall the system.

Restore the BIOS to its default state first and see if it resolves.

Replace the location of the hard disk interface to see if the problem is resolved.

Check the hard drive for bad sectors, and repartition it if so.

Replace the hard disk data cable to see if it is resolved.

Take it to repair the hard drive.

Meaning a hard disk read error. Press... Reboot. Reworkable system. Rarely, the hard drive is broken. So there is only one to change.

Your computer is locked, please log back in.

It is inevitable that you will encounter problems when using the computer, for example, recently I encountered the main engine fan turning again but the screen did not respond. Let me tell you about the solution to this problem.

01 First of all, check whether the host indicator is on, if it is on, it means that the host is fine.

02 Then check the connection cable between the host and the screen, one is to check whether the interface is loose, I suggest you unplug it and plug it in again, so as to ensure that the contact is good and then try to boot again, see if it can solve the problem.

03 There is also a problem with the connection cable between the host and the screen, that is, it is broken, just go to the computer store again to buy a new cable and replace it.

04 Go to the screen to see if it's turned off, there will be a power switch on the screen, if you turn off the host screen, it will definitely not respond!

Also, it's possible that the monitor is broken, but it's very unlikely!

Check that the power plug is plugged in securely.

Check to see if the socket is damaged.

If all of the above is correct, it is recommended to take it for repair.

Check the power supply, internal interfaces, graphics card, and memory cheat wipe.

It may be a power supply problem, so it is recommended to replace the power supply.

Did you change it to another power supply to try?

The reasons why the computer turns on the fan but the monitor does not respond are: monitor connection problems, graphics card problems, memory problems, power supply problems, and motherboard problems.

1. Display connection problems.

The first thing to check is whether the connection between the monitor and the computer is normal. If the Yuanzhiguo display is not connected properly, or the connection is loose, then the display will not work properly. The rest of the argument is that you need to check that the cable on the monitor is plugged in, or try to replace it.

2. Graphics card problems.

If your computer is using a discrete graphics card, it's possible that there's a problem with the graphics card. You can try re-plugging the graphics card, or replacing it with a different one to fix the problem.

3. Memory problems.

Memory is also an important part of how your computer works, and if there's a problem with the memory, it can cause your computer to not boot properly. You can try replugging the memory, or replacing it with a new memory to resolve the issue.

4. Power supply problems.

The power supply is the heart of the computer, and if there is a problem with the power supply, it will cause the computer to fail to start and hail normally. You can try replacing a power supply to solve the problem.

5. Motherboard problems.

If none of the above causes solve the problem, then there may be a problem with the motherboard. You can try re-plugging the motherboard, or replacing it with a new one to fix the problem.

You can see if the keyboard light is on, if it is on, Zhaoshi, change the monitor and try it, or check the graphics card, if it is not on, you need to check the power supply or family closed memory, motherboard state keys, etc.

This phenomenon is called a black screen, and it may be a problem with the software or hardware.

One, the black screen caused by the software.

Sometimes after installing some software or hardware drivers, you find that after restarting, the computer can't enter the system and the screen has been black, which is the black screen of the laptop caused by the software. If the black screen is caused by software, take the Windows system as an example, you can restart the machine, press the F8 key several times when booting up, and bring up the system's boot options menu.

Once the System Boot Options menu comes out, select Enter Safe Mode. If you can enter the safe mode normally, you can delete the software or driver installed before the black screen in the safe mode. Then restart the machine and see if the laptop can fix the black screen issue.

Second, the hardware causes the laptop to have a black screen.

Hardware-induced black screen for the following reasons:

1) The cause of static electricity, sometimes static electricity will cause the circuit of the notebook motherboard to be abnormal, resulting in no reaction on the screen after the power is turned on. You can try to turn off the battery and power of the laptop, and then press the power start of the laptop several times to let the machine release the static electricity. Then connect the power supply, turn it on, and see if it can solve the fault.

2) The memory is loose or the memory has a hardware failure. There are several major components of a laptop computer, including the CPU, motherboard, memory, and graphics card. These parts are indispensable, as long as one of them has a problem, it will cause the laptop to not function properly, the most common is that the boot does not respond.

In general, the probability of CPU and motherboard failure is relatively small, and it is more common for the laptop to fail to boot due to loose memory. At this time, first remove the battery and power supply of the notebook, if it is not difficult to remove the computer, you can open the back cover of the notebook by yourself and reinsert the memory. After plugging in the memory, power it on again, start the machine, and see if you can solve the fault.

3) The LCD part of the notebook is faulty. There are some notebooks that are a little older, and this may be the case. Display components generally include displays, data cables, and some other small parts.

If you have a desktop monitor, try plugging it to the VGA display connector on your laptop, and then switch the display to the VGA external display on your laptop. If you can switch to an external monitor, it means that there is a big problem with the display part.

4) The graphics card hardware is faulty, the graphics card is responsible for the source of all the display output of the computer, so it has a problem, and there is no display on the screen. If the graphics card is broken, the average user can't solve it, and the only way to solve it is to find the computer's after-sales service. If the notebook is within the warranty period, it can be taken for free inspection and repair.

There are many reasons why the computer can't be turned on and the screen doesn't respond, one, the system is damaged, the hard disk is damaged, the notebook can't recognize the hard disk, etc., second, the memory is broken or the memory slot is soldered, and then there is a problem with the motherboard power supply chip, and third, the BGA (north-south bridge, graphics card, network card, etc.) packaging chip virtual soldering damage will cause the boot screen to not light up. It is recommended that you send it for repair and testing.

I'll help you in Beijing.

If you are not in Beijing, it is recommended that you find a reputable and skilled repairer to help you overhaul.

Fan rotation proves that the power supply is normal.

Common possibility. 1: Memory socket.

2: The screen cable is aging.

3: The screen backlight is damaged.

Except for the first one, everything else requires maintenance at a cost. Let's sit down and hope it helps.

This phenomenon is called black screen, which is caused by memory failure, loose hardware in the host, excessive dust or oxidation, system failure, etc.

Solution: 1. Clean up the dust in the chassis, especially the dust from the motherboard and CPU fan.

2. Remove the memory module and use an eraser to clean the oxide film on the gold finger, and clean the card slot at the same time, and treat it the same as a separate graphics card.

3. Replace the CPU cooling grease.

It has not been used for a long time, and the contact between the parts is poor, it is recommended to re-insert the memory, wipe the gold finger with an eraser, and if it still can't solve the problem, it is recommended to go to the maintenance station.

The computer system is broken, and it can't be started. Or maybe your graphics card isn't plugged in.

Memory! ~

You rub the gold finger! ~

Fan rotation proves that the power supply is normal.

Common possibility. 1: Memory socket.

2: The screen cable is aging.

3: The screen backlight is damaged.

Except for the first one.

Everything else requires costly maintenance. Let's take a seat

Hope that helps.

One of the common faults of the computer not turning on.