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1. Common reasons why the laptop cannot be turned on.
1. Power supply problems.
If it is an external power supply, first see if the power supply is not plugged in properly or there is a problem with the plug. If you are using a battery, it may be that the laptop power supply is running low.
2. The motherboard is faulty.
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, breakage, and damage to the components of the motherboard itself.
3. Circuit failure.
In addition to artificial liquid ingress and short circuits, most of the failures of laptops that cannot be turned on are problems with the protection isolation circuit, the failure of the boot circuit and the EC peripheral circuit, and sometimes the circuit will be burned out in a large area.
4. BGA failure.
BGA failure is also a failure caused by the laptop not being able to turn on, which is extremely common in notebooks that use DBM as the South Bridge chip in the Swift Relaxation generation.
5. If it cannot be solved, it is recommended to send it to the after-sales center for maintenance.
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1.You can try it with the driver wizard.
2.If you encounter this kind of problem, it may be because of ghost, if you drive the wizard, the universal driver can not be solved, and the test is installed in the following order: install the system - > arrange the motherboard chip driver - > install the onboard device driver (sound card, network card) - > install the camera driver.
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BIOS settingsInappropriateRecoverybiosfactory settings); System filessabotage (Revertsystem orReloadsystem).;WrongOperation (EnterSafe Mode (Power onKeep pressing f8) >SelectConfigure it correctly for the last time!
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As long as the hardware is okay, reinstall the system.
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1. Check whether all the plugs of the power supply and the wires on the adapter of the notebook are firmly inserted into their respective sockets, if not, it means that the contact with the power supply is poor, just press the plug down again.
2. If the indicator light is not yet on, on the premise of ruling out the power adapter, it must be that there is a problem with the power chip of the motherboard or a short-circuit breakpoint, and the motherboard is not powered on.
3. If the indicator light responds but the screen is black, it may be a problem with the graphics card or memory.
4. There is no display when the boot is normal, check whether the power cable, switch, and data cable of the display are correct, and it is also possible that the display is damaged.
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Have you changed anything recently, such as drivers, or installed any software?
1. Restart the computer, press F8, and the selection menu will appear.
2. Select the last correct configuration, try the safe mode, if you can enter the safe mode, you can uninstall the recently installed software or driver.
3. If this is still the case, you can only redo the system.
There are many reasons why the notebook cannot be turned on, including the corresponding fault phenomenon, and we can judge different fault causes according to different fault phenomena, so as to find the corresponding solution. >>>More
1。If this is an accident, usually restart the computer and the symptoms will disappear! >>>More
1.Sometimes it may be that the laptop has a black screen caused by some software installed, you can press F8 a few more times before restarting the machine. >>>More
ThreeMethod:1. BIOS settingsInappropriate(Restore the BIOS.)Factory settings >>>More
Solution 1 for Lenovo laptop won't turn on:
First, check to see if the computer has started booting up the operating system when you turn it on. If the operating system freezes, blue-screens, or automatically restarts when the operating system is booted, the partition table and master boot record of the hard disk are normal, and the fault causes such as the corruption of the hard disk partition table, the corruption of the master boot record of the hard disk, and the loss of the hard disk partition end flag are ruled out. The following method is then used to make a diagnosis. >>>More