Then if no clock programs are running (and they CAN effect your bios settings), then more than likely it is the CMOS battery. Usually many MBD will disable the clock as a power saving function.. but eventually, the battery will weaken enough to the point where BIOS configs wont save after a power down.
If you argue with an idiot he will drag you down to his level and beat you with experience.
I am not a fast writer.
I am not a slow writer.
I am a half-fast writer.