1, you can turn off the power first, open the compartment, pull out the memory, and aim the eraser at the golden finger (that is, where there are copper sheets).
2. Rub it back and forth a few times, then insert the memory stick (or insert another memory stick), and it will be ok.
3. If you have a discrete graphics card, you can also use the above method to handle the graphics card, then plug it back into the graphics card slot, finally install it and restart the computer. (The memory picture is as follows:)
Extended data:
Poor compatibility: plug the memory into other motherboards and run stably and reliably for a long time; Inserting other memory into the failed motherboard is also reliable and stable, and there is no alarm.
But put the two together, there will be a "beep" alarm. This failure can only be solved by replacing the memory.
Poor slot: It is manifested by the alarm sound of "beep" when replacing multiple brands of memory. Occasionally, a memory does not give an alarm, but it may give an alarm after shutdown and restart.
This kind of fault mainly appears on the low-grade motherboard of 200-300 yuan, because the motherboard is low in price and the quality of the memory used is poor, so it can only be solved by replacing the motherboard.
Chip failure: This kind of failure is more serious. During the power-on self-test, the host can find errors and defects in the memory, but it can't pass the self-test and send out a "beep" alarm to remind users to check the memory.
This failure requires plugging the memory into other hosts and checking whether there is the same "beep" sound. If so, it can be concluded that there is a problem with the memory; If not, it may belong to the above 1 or every 2 reasons.
Memory alarm caused by other faults: this kind of fault is not common, which may be a motherboard fault or a CPU fault, causing memory alarm and can only be eliminated and replaced one by one.
References:
Baidu Encyclopedia-Computer Memory Failure