Q: Are you sure you want to shut down your computer now? Message

Yes I found both of these when I was searching for info to my problem and tried both of them. Another thing I forgot to mention is that I also thought it might have been the battery so I ordered a new battery and tried that and it didn't work either. Now something that is kinda weird or more weird with this comp is that earlier when I picked it up n opened it it turned on its own when I opened the screen. It also turns on as soon as I plug the charger into it. And this is a brand new mag safe charger I bought also. It's like the computer is getting a command in the operating system to shut down. I got this from a friend a while back and it only has a 60 gig harddrive and I noticed that it was 90% full but I can't seem to find where any of the stuff filling the HD is. When I installed the new iOS I thought it was going to wipe the HD clean but just noticed it didn't. Do u know how I can do that?

The model is A1370 and it is a late 2011. It has a 60 gig harddrive and 2mb ram. It has a sealed battery but I have the torx I needed to change it with a factory new Apple battery. It ad this problem before I tried a new battery. Is there any chance this could be something in the software or something that was downloaded doing this? I've seen a few things about bad keyboards and was thinking maybe I should try to disconnect the keyboard and see if it still shuts it self down. I read somewhere it's just a ribbon cable I'd have to disconnect.

If anybody is still out there and sees this thread I still need some help. So I unplugged the keyboard ribbon and put the battery back in and nothing. it won't start up or do anything. So I plugged the ribbon back in and back to crazy. I don't know how but sometimes when I open the laptop it automaticlly starts up As if I pressed the power button, not like it was sleeping or anything. It starts up when I plug in the charger or when I push the power button. So next I got it on and lifted the battery carefully just enough to pull the keyboard ribbon cable out and it stopped trying to shut down on me. I played around with it for about 20 min just to be sure and opened and closed a lot of things and smooth as could be. I shut it down and without the keyboard being plugged in it won't start up when I open it or plug in my charger or anything. I plugged the ribbon back in and same thing happened. It keeps trying to shut down without me pressing the power button. If i am constantly doing something and moving the mouse the msg never pops up but as soon as I stop for a few sec the msg pops up and if I don't click cancel it shuts down in a few seconds. I took the power button off and cleaned it and blew it out but nothing seems to help and like I said the button works. I need help.