What should I do if the CPU fan starts spinning and then stops?
The first step
Open the case, remove the memory module and the graphics card
The second step
Use an eraser to wipe the gold finger, and then plug it back in
The third step
Check whether the host power supply is good, you can use the replacement method, use other Power supply test
Step 4
If it can be turned on, it is a power problem. If it still cannot be solved, it is a motherboard problem. It may be the motherboard protection function.
The fifth step
You can remove the motherboard battery, discharge it and reinstall it
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