u could keep the system off for awhile, say over an extended weekend then power it on. before it boots (MAKE SURE IT DOENS"T BOOT!!!), go into the bios and check the clock and see if its off still. If it is, then its the battery most likely as it wasn't keeping up.
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.