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The clock in Windows 10 displays the time with a delay; it only updates after a refresh.
The system clock in the lower-right corner of the taskbar sometimes stops updating and displays a time that is a few minutes or even longer behind the actual time. When you click the clock to open th...
If the clock consistently falls behind even after a restart, it could be a sign that the small CMOS battery on your motherboard is running low. This battery keeps the system clock running when the PC is off. If it's dying, the clock might lose time during shutdowns and gradually drift after startup.