Clock Malfunctioning?

[DUDEMANGUY5]

Has this happened to anyone?
I woke up this morning and my Router password was forgotten, and my clock was set to December 31, 2000. When i got it connected to the Internet it was correct again.

 

[old-wiz]

Losing the time when powered off usually indicates a problem with the battery. Computers, even desktops, have a small battery that keeps the clock ticking. They do wear out; I had an older Dell laptop that wouldn't keep time after being powered off and I had to reset the time every time I booted the machine. It was old and I only used it for one program, so I didn't bother to try to get it fixed. If you have a new MBP, then it's time to take it to the Genius bar.

 

[Reelknead1]

If you are talking about your 2010 MBP, then if it happens again make an appointment at the apple store. As previously stated its most likely the bios battery.