I purchased a used (old) Pavilion dv6 laptop that was running Windows 10. The seller set it to revert to factory settings to remove all of his data and programs, which also changed Windows back to Win 7. I have reinstalled Win 10 from a thumb drive. Did the factory reset also change the CMOS/BIOS settings back to default settings too (if changes have ever been made)?
I noticed the windows system time is randomly changing on me, and I wondered if it's possible the CMOS battery is weak, and may be the problem. If I replace the CMOS battery (with all power off), do you think I will have any problems with Windows booting back up when I power the laptop back on with the new battery in place? I see changing the battery is very easy, and I have a new CR2032 battery in my desk. I just don't want to replace it, and mess anything up, not able to boot.