1. The CPU fan of the laptop does not rotate

       Fault phenomenon: A laptop computer, the CPU fan is found to be still not rotating when the temperature of the back panel is very high. After checking, it is found that the fan rotates once when the computer starts the self-test, indicating that there is no problem with the fan braking. However, it still does not rotate when the temperature of the back panel is very high.

Solution: The CPU fan is mainly used to dissipate heat for the CPU. It will only rotate to dissipate heat when the CPU temperature is higher than about 70℃. In addition, the problem of high temperature of the back panel is not necessarily caused by the CPU. The heat of accessories such as the hard disk, memory, graphics card and motherboard may all gather here, so the high temperature of the back panel is inevitably related to whether the CPU fan rotates. In addition, it is recommended to run a large game at the same time for testing. If the CPU fan still does not rotate after a period of time, it may be a problem with the CPU fan.

2. CPU fan is not installed properly, causing frequent freezes

        Fault phenomenon: An IBM T42 laptop computer will become slower after running for a period of time as soon as it is started, and will freeze and restart automatically for no reason.

       Solution: Since the CPU fan is noisy, the CPU fan of this laptop had been removed and cleaned before. Therefore, it was judged that the problem might be with the CPU fan, causing the CPU temperature to be too high and causing the problem. Later, it was removed and tested and it was found that the screws of the original CPU fan of T42 were not installed in place. After reinstallation, the fault did not occur again.

3. CPU cooling air duct blockage causes shutdown failure

        Fault phenomenon: The machine suddenly stops working after working for more than an hour, and can be started again after a while, but stops again after a while.

Solution: Since it can be turned on, it means that there is no problem with the hardware system. The reason for this is probably that the CPU temperature is too high, which automatically turns on the protection function and shuts down. So we disassemble the laptop to check. If there is no problem with the CPU fan, then disassemble the heat dissipation duct and find that the duct is blocked by some flocculent objects. After cleaning and restoring the laptop, the problem can be solved.

4. CPU fan stops rotating and causes computer crash

        Fault phenomenon: The CPU fan of the laptop sometimes stops, causing the CPU temperature to be too high and cause a crash.

Solution: Most mobile CPUs now have a temperature protection function. When the CPU temperature exceeds a certain limit, it will freeze or restart to protect the CPU. If there is a problem with the CPU fan, it should be sent for repair as soon as possible to eliminate the fault and ensure the normal operation of the fan.

5. The CPU fan of the laptop sometimes turns on and sometimes stops

       Fault phenomenon: After using a Toshiba M2 laptop of a friend for a period of time, it was found that the CPU fan sometimes rotated and sometimes did not rotate, but the body temperature felt always very high.

       Solution: The fan of the laptop is designed with temperature control. Generally, it will rotate only when the CPU temperature is higher than 70℃. The high body temperature does not mean that the internal temperature is really high, so this problem is not a big deal.

        Shenzhen Huaxinrong Plastic Electronics Co., Ltd. (a subsidiary of Dongweifeng) was established in 2008. It mainly produces and develops a series of products such as AC and DC cooling fans and DC motors. In today's rapidly changing modern technology, all colleagues of Dongweifeng will continue to dedicate high-quality products and services to our customers, and strive to become an indispensable partner for every customer to achieve success.

        Shenzhen Dongweifeng Electronic Technology Co., Ltd. was established in 1991. It is a national high-tech enterprise. It has now developed into a professional supplier of cooling solutions and products for computers, electronics, etc. The company has successfully passed ISO9001:2000 quality system certification, ISO14001:2004 environmental system certification and UL. TUV. CE product certification. As a national key high-tech enterprise focusing on R&D, manufacturing and sales, it has formed three pillar industries: computer electronic radiators, cooling fans; LED lighting, outdoor landscape lighting engineering lighting; and architectural decorative panels.