1. The memory is damaged. Check after replacing the memory.

2. The memory slot is faulty. Replace it with another slot and observe.

3. If memory of different frequencies is mixed, replace it with memory of the same brand and frequency and observe.

4. Pay attention to heat dissipation and motherboard failure.

5. Knowledge extension: ThinkPad is a portable computer brand created by the IBM PC Division.

The first product was released in 1992. ThinkPad has unique technologies including TrackPoint, ThinkLight keyboard light, full-size keyboard and APS. In 2005, ThinkPad was acquired by Lenovo, and the trademark is owned by Lenovo.

6. On July 25, 2016, ThinkPad officially announced its entry into the gaming industry.