[SOLVED] BIOS got reset automatically after PC turned off

[mrb00ce]

So today my electricity went off so my PC also turned off, few mins later it came back so i turned my PC on and it showed that my bios has been reset and my date and time went back to 2016. I updated my date and time but can anyone explain why this happend?

 

[kerberos_20]

hi, u may need replace your CMOS battery, its usualy flat round battery CR2032
https://www.amazon.com/s?k=CR2032&ref=nb_sb_noss_2