What should I do if my Lenovo computer doesn t turn on properly?

Hello friends:

1) Reason: This is due to the formation of an oxide layer on the surface of the gold finger of the memory or independent graphics card, resulting in poor contact between the memory and the memory slot, and the poor contact between the graphics card and the graphics card slot, resulting in a black screen and inability to boot.

2) Solution: You can turn off the power first, open the chassis, dial out the memory, use the eraser to wipe the part of the gold finger (that is, where there is a copper sheet,) back and forth a few times, and then insert it back into the memory slot (or insert it back with another memory slot), it's OK, if there is a separate graphics card, you can also use the same method to deal with the graphics card, and then insert it back into the graphics card slot, and finally install the machine, restart the computer and it's OK, (take the memory ** as follows:)

Hope it helps you and I wish you happiness

1. It can only be forced to shut down, but not forced to start, it is recommended to check whether it can't turn on the power or can't turn on to enter the system;

2. If you can't turn on the power of the laptop, press and hold the power button to check whether the power adapter is working normally, and check whether the fan in the laptop is running; If it is confirmed that it is working normally, and the keyboard indicator Num Lock and Caps Lock are pressed and the indicator lights are on or off, it means that the display is faulty;

3. Notebooks generally have a ** output interface, use ** wire to connect the notebook and the monitor, if it can be displayed normally, it means that there is a problem with the display screen or cable of the notebook, it is recommended to go to the after-sales maintenance;

4. If all of the above are normal, but you can't enter the system, you can press [F8] several times when the computer is turned on, enter the advanced boot options of the system, and select [Last Correct Configuration];

5. If you still can't enter the system, you can select [Security Mode with Network Connection] in the above options menu, after entering the system, use virus scanning software to thoroughly scan the entire hard disk, if you have installed software such as Security Manager, you can use the corresponding tools to find the reason why you can't boot, and finally restart to enter the system;

6. You can also find the [Backup & Restore] function in the [Control Panel] after entering the safe mode, and select the [Restore System Settings or Computer] option at the bottom of the page, if there is a backup before, you can restore to an earlier point-in-time backup;

7. If you have not created a restore point before, you can only start using the PE reinstallation system through the U disk.

The reasons why Lenovo computers cannot turn on properly are as follows:

1. The system is damaged, the hard disk is damaged, and the notebook cannot read the hard disk.

2. The memory module is damaged, the memory slot is soldered, and the motherboard power supply chip is problematic.

3. The virtual soldering of packaging chips such as north-south bridges, graphics cards, and network cards is damaged.

Here's how to fix it:

1. Try to pull out the battery and directly use the power supply.

2. Release the static electricity, unplug the power supply and battery, and press the power button repeatedly for 20 seconds.

3. Send it to the maintenance department for maintenance.

The computer can't be turned on normally, which is a little annoying, and it can be easily done with 5 yuan.

1. Fault phenomenon: After booting up, the screen does not have any display, and no "dripping" sound of the motherboard speaker is heard.

Solution: Contact the motherboard manufacturer to replace the new COMS chip or find the BIOS file provided by the motherboard manufacturer to write it with a burner;

2. Fault phenomenon: After pressing the power button, the optical drive light flashes, the motherboard power prompt light is on, and the power supply is normal, but the screen has no display and no "drip" sound.

Solution: Check whether the CPU is installed correctly, check whether the CPU core is damaged, use the replacement method to check whether the CPU is damaged, and replace the CPU if the CPU is damaged;

3. Fault phenomenon: there is no display or prompt when booting up, the motherboard power supply is normal, the cup is normal, the fan is normal, but the screen is not displayed. There is no "drip" sound of passing the self-test.

Solution: Buy the lithium battery of CR2032, replace the existing battery on the motherboard to complete the self-test normally, and then reset the BIOS parameters;

4. Fault phenomenon: After pressing the power button, the computer will automatically shut down or have no response.

Solution: Correctly connect the CPU fan to the power connector of the motherboard, and make sure that it is connected to the three-core dedicated CPU fan connector of the CFAN next to the CPU.