Generally I just leave my laptop on nonstop and put it to sleep whenever it's not being used (I remember reading somewhere on the Windows 8 user start guide to just let it sleep instead of turning it off). Yesterday, I traveled home for Thanksgiving while my laptop was in sleep mode.

when i start it a screen appears of inspiron with f2 setup nd f12setup at bottom and after that a black screens appears with a blue box in the middle of screen which asks "enter system password"! i am helpless:(

1. I had to replace the old original batterie. I bought the same original Dell battery, but i still get the message that the battery has reached end of lifetime and should be replaced. (That is why I replaced it in the first place...) Is there a way to reset the message? 2.