1 There may be many.
2 Cause one may be caused by the CMOS battery voltage is insufficient, CMOS battery is fixed on the computer motherboard used to save the computer system time and other BIOS information of the battery, if the battery voltage is insufficient, it will lead to time errors, may also lead to clock verification failed.
Cause two may be due to the fault of the BIOS battery or BIOS ROM. The BIOS is a program that is fixed on the motherboard of the computer system. If the BIOS is faulty or the hardware related to the BIOS is faulty, the clock check may fail.
3 To resolve this problem, try replacing the CMOS battery, fixing the BIOS fault, or updating the BIOS.
The reason for the failure may be that the computer's BIOS battery voltage is too low, resulting in the clock chip in the BIOS chip can no longer work properly, forcing the computer clock to lose accuracy.
In addition, if the computer is not connected to the Internet for a long time, it may cause a clock verification error, because the computer cannot automatically update the time.
In addition, if there is a time inconsistency between the network server connected to the computer and the computer itself, the clock verification will also fail.
Finally, if the hardware or software in the computer fails, it can also cause a clock check exception.
1. There may be a number of possibilities, depending on the situation.
2. One possibility is hardware failure, for example, the clock chip itself is defective or the device is connected incorrectly, which will cause problems in the accuracy and frequency of the clock.
3. Another possibility is that the software Settings are incorrect. For example, the clock Settings are incorrect or the system time is changed.
4. If the clock verification fails, check the hardware and software to ensure the clock accuracy and stability and ensure the normal running of the device.
The reason is that if not used for a long time, the rechargeable battery will fail due to overdischarge.
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There is a rechargeable battery inside the microcomputer time control switch, and the rechargeable battery can be charged at the same time to ensure that the user's time control Settings are not lost when the power is off.
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If not used for a long time, the rechargeable battery will fail due to overdischarge. You can power on the microcomputer time switch for a few hours to see if you can activate the battery, if not, you can only replace the battery.
Unwound or uncharged battery.