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February 23rd, 2021 23:00

time and date not set

Hi

I have a brand new Inspiron 3881 a week ago. If power plug removed, it started with message: time and date not set. 

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February 24th, 2021 03:00

This can happen if it has a defective or improperly installed CMOS Memory (BIOS) back up battery.

As this is new you can let Dell support take care of the problem.  But if you want to check it yourself first, the CR2032 battery is located on the motherboard.  Page 21 in the Dell service manual details how to remove/install.

Inspiron 3881 Service Manual (dell.com)

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February 24th, 2021 04:00

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