Plug in the power, the indicator light is not on, and the machine cannot be turned on

Dear users, hello.

You can try to unplug all external devices (including the power cord and battery) of the host, press the power button 5 times at intervals of 2 seconds, and then connect all external devices to power on for testing. This is how to release static electricity, and if static electricity is generated in your computer, the problem you described may arise.

If there is no effect, it is recommended to send it to the service station for testing.

Provide you with a link to the repair network inquiry.

Have a great day.

It should be something wrong with the hardware, find someone to fix it.

Dear Lenovo users, hello!

Once the TV at home fails, it is easy to not turn it on. So what's the deal with the TV not turning on but the power light on?

If the TV is in standby mode and cannot be turned on, you can press the standby button of the following remote control or the channel + - button on the fuselage to wake up the TV; If it still can't be turned on, it means that the TV hardware is faulty, and the fault may be in the high-voltage board or driver board.

1) The power supply of the TV is abnormal due to the failure of the power supply system, and the machine cannot be turned on.

2) The high-voltage package of the TV The high-voltage plate failure causes the screen to be unable to display and cannot be turned on.

3) The picture tube of the TV The display screen failure causes the machine to be turned on and the image is not displayed.

4) The internal circuit failure of the TV or the failure of other parts causes the machine to be turned on.

The desktop power indicator is on, but it can't be turned on when I press the power button, why?

It may be that the plug-in cable is incorrect.

The power indicator lights up to indicate that the motherboard is powered on normally.

Check whether the external wiring of the computer is properly connected, and plug in each cable again to see if the fault is eliminated.

If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

If not, clean the motherboard from dust and check if the computer is OK.

If the fault persists, unplug the reset cable on the motherboard, connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.

If it can't be turned on, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, and motherboard. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.

The solutions to Lenovo's electric light and Huai ruler source light are always on but can't be turned on: check the plug connection, check the hardware device connection, check the hard drive, etc.

1. Check the plug connection.

Check the power adapter and battery to see if the power adapter plug connection is loose or damaged. If you're using a laptop, try plugging the battery into your computer and then try turning it on.

2. Check the connection of hardware devices.

If an external hardware device is connected, such as a mouse, keyboard, printer, etc., disconnect and try to power on again. If the problem is resolved, it may be a driver or hardware failure of a device that is causing the boot problem.

3. Check the hard drive.

It is possible that the computer will not turn on due to a hard drive failure. You can try to go to the BIOS settings screen and see if the hard drive is recognized. If the hard drive is not recognized, you may need to replace the hard drive or repair the hard drive.

Lenovo computer common faults and maintenance methods:

1. The Lenovo laptop can't start, there is no response when you press the power button, and the indicator light doesn't light up. This malfunction is usually caused by damage to the computer's motherboard or battery, which could be a problem with the computer's power supply.

2. As soon as the Lenovo notebook is turned on, the indicator light will light up, but it will go off immediately. The computer motherboard is short-circuited and needs to be specifically detected. Generally speaking, it is easy to cause this kind of malfunction after the computer gets into the water.

3. The Lenovo laptop boot indicator has been on, the screen has not been displayed, and the screen has been black. Generally, it is caused by the failure of computer memory, graphics card, graphics card, screen cable, motherboard, screen, and CPU. There are a number of factors that contribute to this failure and require specific testing.

However, as a rule of thumb, the likelihood of screen, CPU, and intrinsic failure will be very low.

Taking electricity as an example, the solution to the power light can't turn on is:

1. Power cord. Check whether the power cord is plugged in, whether the power cord is connected, and see if the power cord is damaged.

2. Whether the wiring of the chassis boot button is loose. You can stop Hu Yu to test it yourself, open the chassis, pull out the switch cable, and use a screwdriver to short the two pins on the back of the switch, if the fan rotates, it proves that it is a problem with the chassis switch.

3. There is dust on the memory. To clean up the dust in the case, you can use a hair dryer to blow it. Unplug the graphics card and memory, wipe your fingers with an eraser, and reinstall them.

4. Check whether the power supply is damaged. You can change the power supply (if you have one) to see if it can turn on normally.

5. Check whether the motherboard is damaged. Check whether the motherboard light is on, discharge the motherboard battery, and reinsert the cable plug on the motherboard to see if the fault is eliminated.

A computer (also known as a computer) is an electronic computer used for high-speed computing, which has been called "one of the most advanced scientific and technological inventions of the 20th century". The computer is composed of a hardware system and a software system, which has many functions such as numerical calculation, logical calculation, and storage memory. Its application field has expanded from the initial military scientific research application to all fields of society, leading to technological progress on a global scale.