Hello CyberLord,
This is a tricky situation, because this could be, just the battery going low, or it could be a prelude to trouble.
A Brief Explanation
The CMOS (Complementary Metal Oxide Semiconductor) is where the BIOS settings are saved. The battery supplies power to the CMOS to make sure that the computer will retain the BIOS settings while it is turned off.
Apparently when the power outage occured you lost power completely, which would explain why the clock and a few other settings were different.
So...At this point it is hard to say... I would just watch your computer very closely to see if it acts "strange" ... As a precaution, change the battery. And if you still have problems then it would most likely be hardware problems.
Good Luck And I Hope This Has Helped
