Hi! So my settings and files get messed up every time I use my computer after unplugging it (unplugging = while computer is off). When I start it up, I get this:

Please ENTER SETUP to recover BIOS setting

Press F1 to run SETUP

Press F2 to load default values and continue

I press F2 (I have no idea what anything in the setup means, I'm an idiot on computers) and I can use it normally except there are a bunch of visual changes (theme, other things) and missing files, or at least I think so; all games I've tried won't start or will start and have many things missing and not work.

After Googling this a bit it seems like my battery is failing and I need to get a new one. I can do that, but meanwhile how do I get back my things? When this has HAPPENED before I just did a system restore, but this time there aren't any restore points so I guess I'm stuck. One time I remember finding something that worked, it was typing something in the command prompt but I can't find how to do that anymore... so I'm  here.

Is there a topic on here showing how to get specs and what to show?
Sorry I'm so difficult lolPlease tell us information re the computer and also what OPERATING system you are USING? CURIOUS as to why you are "unplugging " your computer? Is this a laptop?truenorthPart # CR 2032...available pretty much anywhere...
Remove all power sources when replacing it and take anti - static precautions...