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#91
The time span of your system doesn't say much, components could fail within those 2 years as could the CMOS battery.
I lieve that decision to you, but I would choose a new motherboard.
If it is the BIOS, then it has been replaced with a new battery thanks to a new motherboard, but if it isn't the battery then it could be a waste of money if only the battery is replaced.
I haven't seen any tutorial or something for it, but you probably are in the best place for help at PC Custom Builds and Overclocking - Windows 10 Forums