What to do if the laptop turns on and there is no response

Generally, it means that the laptop does not respond at all after pressing the power button, that is, the indicator light does not light up after pressing the power button, the fan does not rotate, and the laptop does not respond at all. The most common occurrence in this situation is that the laptop battery is dead, or the external AC power supply is damaged or poorly connected.

Check if it's a power supply issue.

First of all, see if the power supply is not plugged in properly 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 find a power supply of the same model to try it. If it can be turned on, then it means that the external power supply is damaged, if not, then it means that there may be a hardware failure inside the laptop or the laptop boot button is out of order, in this case, it is recommended to take it for maintenance.

Check for loose critical components.

If the computer crashes after moving, it may be that the computer has been subjected to a lot of vibration during the move, causing the internal parts of the computer to be loose and in poor contact, resulting in a crash. Open the machine and re-fasten the memory, graphics card, hard disk and other equipment.

Motherboard failure: Motherboard failure is the main reason why laptops won't turn on. It is often caused by factors such as liquid ingress of the notebook, damage, and damage to the components of the motherboard itself.

Circuit failure: In addition to artificial liquid inlet and short circuit, most of the faults of laptops that cannot be turned on are problems with the protection isolation circuit and the failure of the boot circuit and EC peripheral circuits, and sometimes the circuit is burned out in a large area. BGA Failure:

BGA failure is also a fault caused by the laptop not turning on.

The above three types of hardware damage can only be carried out by professional maintenance personnel, so that professionals can systematically check your computer and troubleshoot.

The laptop boot does not respond, at this time we can force the shutdown, and then boot into the BIOS system, click the F8 key, so that after entering, we can open the normal application matching configuration is completed.

In this case, it is directly related to the hardware, and it is recommended that you perform the following operations:

1. Remove the battery on the back of the notebook, connect the computer with only the power adapter, and try to turn on the computer, if the boot is normal, then it is caused by poor battery contact or battery failure.

2. Only use the battery, do not connect the power adapter, if the boot is normal, then it should be caused by a problem with the power adapter or a short circuit in the power interface of the notebook.

3. Unplug the power cord, remove the battery, and press and hold the power button for 30 seconds without letting go. Try to boot up, if the boot is normal, then it is only caused by the abnormal BIOS of the motherboard.

4. Unplug the power cord, remove the battery, open the back cover of the memory, plug in and unplug the memory, wipe the gold finger part with an eraser, and plug it back in (don't reverse it).

5. If the above operations cannot solve the problem, it is recommended that the notebook be sent to the maintenance center for testing.

The problem may be with the keys or the computer.

1. Check whether the computer is sufficient, if it is not sufficient, please connect the power supply.

2. Check whether the boot button is damaged.

3. If there is no problem with any of the above, it may be that there is a problem with the system, and it is recommended to reinstall the system.

4. Press and hold the power button to release the static electricity, and then connect the power supply to turn it on.

5. If none of the above can be solved, it is recommended to seek a professional.

The Dell laptop does not respond when it is turned on, and the yellow and white indicators keep flashing alarms, which is a common fault of Dell laptops. When encountering this kind of failure, we should analyze the problem from the following aspects:

1. The power supply circuit of the motherboard is faulty.

Failure of the boot circuit of the notebook motherboard, such as clock, reset, power supply, MOS tube, etc., may cause boot failure. There is a problem with the io chip, it does not boot the computer. This kind of hardware failure cannot be repaired by a professional unless it is a professional.

Solution: Send the motherboard or repair shop for repair after sale.

2. Hardware problems outside the motherboard.

First of all, please try the following: unplug all batteries and power adapters, press and hold the switch button for 30 seconds, release the static electricity, wait for about 15 minutes, and then connect the power adapters separately to power on; If it doesn't work, here's why.

1. The laptop memory is oxidized with the graphics card, and the memory slot or graphics card slot is in poor contact, resulting in a black screen on the machine, and the possibility of a black screen accounts for 60.

Solution: Turn off the power, open the back of the laptop, and remove the memory card slot. If the individual graphics card is not soldered to the motherboard, the card slot is removed and the eraser is rubbed back and forth several times on the memory and graphics card gold finger.

Then put the memory card and graphics card back in the card slot, close the back cover, and maybe the computer will boot up normally.

2. It is the main chip of virtual soldering and performance degradation of notebook graphics cards. If the graphics card BIOS is faulty and there is a problem with the control power IC, the graphics card will not work properly and the screen will naturally go black.

Solution: Simply repair the graphics card, or replace the graphics card.

3. The laptop screen cable is damaged or has poor contact, resulting in no image signal being transmitted to the screen for display, that is, the screen is black.

Solution: If it is still under warranty, it will be sent to the after-sales service, if the warranty period has been sent to a professional repair shop, let the professional repair.

3. System failure.

If the system boots normally after reinstalling, it is a system problem.

Fourth, the hard disk failure.

Replace it with a working hard drive and try to boot it. If the computer boots up properly and enters the system, it's a hard drive problem.

There are three reasons why the laptop does not respond when it is turned on:

1. Note which battery is 0, in this case, you need to connect an external power supply and then turn it on.

2. Caused by static electricity. Try to use the power adapter alone and use the laptop battery alone to turn on, unplug all external devices, batteries and power adapters, press and hold the power button on the laptop to release the static electricity and let it stand for dozens of minutes before connecting the power adapter to turn on the computer.

3. Hardware failure needs to be sent to the after-sales service for repair.

The detailed processing steps are as follows:

1. Unplug the power supply (adapter) of the notebook.

2. Disassemble the battery of the notebook.

3. Press and hold the power button for 30 seconds.

4. Connect the power adapter (note: not the battery).

5. Press the power button to turn on normally.