The computer can t turn on, the power fan turns, and the CPU fan turns

The computer is just a fan turning, the display does not respond, there must be a problem with the computer hardware, it is best to use the replacement method to eliminate the problem, judgment method:

1. Press the upper and lower case on the keyboard. The light is on, indicating that the graphics card, monitor, and other hardware are faulty.

2. If the keyboard light does not light up, it means that it is a memory, CPU, motherboard, or power supply problem.

Solution: 1. If the keyboard light does not light up, first wipe the memory module with an eraser, and check whether the gold finger of the memory module has any burnt marks. Replace the memory in the slot.

2. Check the capacitors and resistors on the motherboard to see if the capacitors are bulging, whether there is a burning smell on the motherboard, and clean up the dust on the motherboard.

3. Remove the CPU fan, power on and turn on, test whether the CPU has a temperature change by hand, if not, the CPU is not working, either the motherboard is broken, or the CPU is not plugged in properly, and the CPU is re-plugged.

4. Power supply problem, although the power supply is powered on, but the motherboard can not work normally, replace the power supply and try it.

5. If the display card is loose or oxidized, the keyboard light will be on, the screen will not be displayed, wipe the gold finger of the graphics card with an eraser, and check whether the capacitance on the graphics card is bulging.

6. Minimize the test method, only leave the power supply, motherboard, CPU, memory, graphics card, keyboard, monitor, unplug all the wires on the rest of the motherboard, use a screw knife to short the switch pins, if normal, add the rest of the hardware, piece by piece, until the cause of the problem is found.

If the memory is unplugged and turned on, the motherboard does not alarm, then the motherboard does not have a self-test, you can clear the BIOS try (take off the motherboard battery, wait for 10 seconds and then install it) If the motherboard has not alarmed, then check whether there is a capacitor bulge on the motherboard, it is best to go to the computer city to find a professional maintenance to see!

This is more likely.

1. Judge whether your CPU fan is not as strong as before, if so, it is recommended to replace the computer power supply, it is likely that the computer power supply is aging and the power is not enough, and the motherboard cannot start normally;

2. If it still doesn't work after plugging and unplugging the graphics card, it is recommended to borrow a new graphics card to try, in this case, most of the boot display does not respond.

3. Plug and unplug your CPU, sometimes the CPU fan bracket resonates due to the fan not working properly, so the CPU does not work properly.

The memory was unplugged and there was no alarm.

The possibility of having a problem with the motherboard is more playful.

It is recommended to try a different motherboard.

Computers that haven't been used for a long time will get wet, there will be problems when they turn it on, and the general power supply will be burned out! The solution can be to replace the power supply.

You can also check the memory module, the way to detect is to unplug the line to test the boot status, if it can be turned on, it will not restart, then it is a memory problem, if not, it is not a memory problem.

The switch or rerest key on the host computer does not pop up after pressing it, or the CPU and CPU socket are not fully contacted.

The computer also needs to be maintained frequently, and regular maintenance of the chassis can increase the service life of a lot.

1. The power supply is aging and damaged, which is often manifested as a fan that stops when it turns around. Replacing the power supply can be solved.

2. The power switch is damaged. This is not common, unplug the power switch to the positive and negative poles of the motherboard switch, and use a screwdriver to short the positive and negative poles.

3. Static electricity. Pay attention to unplugging the power cord when upgrading the memory, and it is best to touch the radiator or the like to put your own static electricity. For now, unplugging the power cord, it is best to remove the battery from the motherboard, press and hold the power button of the case for a few times, and then quickly press the power button a few times to release the static electricity in the case.

Attach the motherboard battery and connect the power cord to try to see if it can light up.