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RTC (Real-Time Clock) battery is at the end of its life. Call an authorized
dealer to replace the RTC battery.
GPS signals drop when they are not supposed to.
If your Tablet PC is connected to the docking station which has one or
more USB 3.2/3.1/3.0 devices connected, the USB device can interfere with
the radio frequency, causing poor GPS signal reception. To solve the
problem in this situation, run the BIOS Setup Utility, go to Advanced
Device Configuration Docking USB Port Setting and change the setting
to USB 2.0.