The black screen of the Lenovo notebook can t be turned on, and the power lights are on?

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.

The laptop does not turn on the black screen, the power light is on, it only means that the power supply has been turned on, and the power adapter needs to be tested whether it is normal or not. It is recommended to ask an insider to check it out.

If it can't be turned on after restarting, the power strip may be faulty.

This is very simple, find the engineer who repairs the computer to check, the hardware problem can be replaced with hardware, and the software can only be reinstalled in the system.

Hello, it is recommended to clean the computer comprehensively.

There are several workarounds for the black screen:

1。Try to boot the computer, after the computer brand is out, press F8, press Enter, Enter, enter the safe mode, and start advanced.

options, the last correct configuration, Enter, Enter, press to try!

2。Enter safe mode, start normally, press enter, go to the desktop, and use antivirus to kill the whole disk!

3。Use: Defender conducts a comprehensive physical examination of the computer, detects and kills the Trojan horse, and repairs the computer.

4。Unplug the graphics card and memory sticks, erase them, use a brush again, clean the slots of dust and fans, replace the memory slots, and more!

6。If you still can't turn it on, you need to "one-click restore" or "reinstall the system"!

In terms of hardware, it is necessary to observe whether the hardware is installed properly, whether it is loose, deformed or broken. These conditions can cause your computer to shut down, especially if you pay attention to the graphics card and memory module.

The computer can't enter the system when it is turned on, it is generally stuck in the welcome interface and has been spinning, and the forced restart of the computer is still the same, this situation may be a problem with the driver installation, or there is a conflict in the program that starts at boot, and the Trojan virus may appear like this.

If there is a problem with the system, it is recommended to restore to the last correct configuration, and if it does not work again, it is recommended to reinstall the system.

Hard disk, memory, and graphics card can be checked.

The reasons why the Lenovo notebook can't turn on and the power light doesn't light up are as follows: First try the following: remove the battery and power adapter, press and hold the switch button for 30 seconds to discharge the static electricity, wait for about 15 minutes, and then connect the power adapter separately to power on; If it can't be turned on yet, it is the following reasons.

1) The first reason is that the power adapter of the notebook is damaged and cannot be powered on, or the battery of the notebook is out of power, and it cannot be turned on from the surface to the black screen. Solution: Replace the power adapter or fully charge the battery.

2) The second reason: the boot circuit of the notebook motherboard is faulty, such as clock, reset, power supply, MOS tube, etc., which may cause failure to turn on, black screen, IO problems, unable to start the computer, black screen, etc., solution: send after-sales or repair shop to repair the motherboard, (3) The third reason:

That is, the video memory of the notebook graphics card is soldered, the performance of the main chip is reduced, the graphics card BIOS is disordered, and the control power supply IC is problematic, which will cause the graphics card to fail to work normally, that is, the graphics card is broken, because the graphics card is broken, it will naturally not be able to boot, and the screen will be black.

Hello dear. Shake the power interface, see if it is not in good contact, if there is no reflection, try to start with the battery to see if it works, if you can use the battery, the front circuit of the computer is broken, that is, the power adapter to the main power supply part, if it is not good, the power supply circuit of the motherboard is broken, in general, the power interface is in poor contact or the motherboard is broken. If the laptop fails to turn on, you can troubleshoot it as follows:

1) First remove the battery, unplug the power plug, press and hold the power button for about 5 seconds, then plug it in to see if it can be turned on, if it still can't be turned on, continue the following steps. 2) Remove the battery, unplug the power plug, and open the back cover screws with a Phillips screwdriver. There is an opening on one side of the cover, and the cover can be removed by gently cocking it along the opening with a screwdriver.

3) After removing the cover, find the memory module, and use a screwdriver to gently remove the clips on both sides of the memory module, so that the memory module can be released. Gently remove the memory module and wait a few moments before putting it back on. 4) Cover the cover plate in reverse according to the disassembly method, install the battery, and turn on the power button to restart.

What should I do if my Lenovo laptop won't turn on?

First, the reason why the computer cannot be turned on is too complicated, and you have not explained the specific situation of not being able to turn on, so you can only explain in principle that the computer cannot be turned on due to hardware and software reasons.

2. Solution:

1) Press F8 when booting up to see if you can enter the advanced boot option, if not, it is a hardware problem and needs to be repaired.

2) If you can enter the advanced boot options, then select safe mode to boot, if it still can't start, select the latest correct configuration boot, and if it can't be booted, you need to use PE boot disk to boot the computer.

3) Use the PE boot disk to start the computer 1, can not start, need to be repaired.

The notebook does not start is mostly a hard disk problem, and you can't repair it yourself and send it to Lenovo for after-sales testing and repair.

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

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

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.

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.

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).

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

The power light of the notebook is on, the screen is black, see if the computer has entered the system, if it enters the system black screen, you can log out the current account, and then log in to the account again, which can be solved.

There was an error in the display resolution:

If this is the case, you need to connect the power cable of the computer first, restart the desktop computer and wait for the green light to turn on, press the "Ctrl + Alt + F7" shortcut key to restore the default resolution, or you can also change the resolution of the computer after booting to prevent the problem from happening again;

VGA cable failure:

Carefully check whether there is a problem with the VGA cable, if there is a problem with the cable breakage, damage, oldness, etc., it is enough to replace it with a new VGA cable.

Graphics card failure:

If the graphics card fails, reinstall the graphics card, the specific steps are to open the bezel on the chassis where the graphics card is stored, insert the graphics card, then turn it on, install the driver according to the system prompts, and restart it after completion.

Computer Virus Destruction:

When you start the computer, immediately press and hold the Ctrl key on the keyboard, or press the F8 key on the keyboard before booting into the Windows system boot screen, and wait for the computer to enter safe mode to scan.

1. If you encounter a situation where the boot button of a Lenovo laptop is on but the screen is black, you can remove the battery on the back of the laptop, connect the computer with only the power adapter, and try to turn on the computer once. 2. Or only use the battery, do not connect the power adapter, if the boot is normal, it should be caused by a problem with the power adapter or a short circuit in the power interface of the notebook. 3. Or unplug the power cord, then disassemble the battery, and press and hold the power button for 30 seconds without letting go.

Change this to try to boot once, if the boot is normal, it is only the motherboard BIOS is abnormal and causes the annihilation to be called. 4. If it still doesn't work, it is recommended to find professional maintenance personnel for on-site maintenance.