The laptop can t turn on the fan and doesn t spin, for whatever reason

Solution: First, check whether the external wiring of the computer is 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.

If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can display, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

When the computer is turned on and started, the system BIOS starts to POST (power-on self-test), and when a fatal error is detected in a device in the computer, it will control the speaker to send out a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound. If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.

Generally, this is generated by standing power, and you need to discharge it first, and then try to turn it on.

Notebook Discharge Method:

1.Unplug the power adapter.

2.Unplug the battery.

3.Press and hold the power button for more than 30 seconds (the specific time depends on the specific notebook) If it can't be solved, it may be that there is a problem with the motherboard's power supply.