Hotel lock time is not allowed. Is it a module failure or a read head failure?

There are two reasons, one is poisoning (I have encountered the problem of inaccurate time caused by virus) and the other is that the CMOS battery is dead, so change it.

After reading yours, I always add, and I'll add:

Whether the BIOS is upgraded or not has nothing to do with your timing! Believe me, it's true. Generally speaking, in addition to the two reasons I mentioned, there is another reason that the crystal oscillator on the motherboard is a "soft fault", but this fault can be basically eliminated, because it has a fault, which will lead to a series of problems, not just time, so I suggest you disinfect the system first.

Let me tell you a little experience. Take down the battery on the motherboard, find a dry battery, and connect the motherboard battery with wires for two seconds, so that if the battery is dead, it can be used for at least one year. If the time is still inaccurate, we can only suspect that it is caused by a virus.

For time synchronization, on the INTERNET Time tab, select Beijing in another time zone.

According to what you said, if the battery voltage is insufficient, it is likely that there is something wrong with the quality of your motherboard. The crystal oscillation of the clock chip or time circuit on the motherboard is abnormal (or defective). It is best to test the accuracy of the clock by turning it on continuously for a long time under the premise of good time, which can well eliminate the cause of power supply. The rest is the problem of the crystal oscillator of the clock chip or time circuit on the motherboard. Because some small factories may make do with some unqualified defective products (or parts) while reducing costs.