Are you having to change the date and time on the computer often? Receiving error messages during Power On Self Test? Problems with Subscription services? The problem may be the battery in the computer. The battery only last up to 5 years starting from the day the motherboard was built. That means the motherboard may have been built at least a year before it was installed in your computer or longer by the time you bought the new computer. Here is a simple way to replace that battery.
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How to change the RTC / NVRAM / CMOS battery