Problem with trackpad and keyboard on Macbook Pro
Hello,
I have a Macbook Pro Early '09 (I got it about 1 month ago used) and yesterday a problem occurred. Suddenly, as I was typing a message, the keyboard stopped responding and the trackpad started acting up. Whenever I tapped with 1 finger, it would mark the text or would show the right-click options ("Copy, Cut, Paste" etc on text or "New Folder" etc on desktop).
I restarted it thinking that it would probably solve the problem, but then I couldn't even log in, because not all keys were working, so I couldn't enter the password. Pressing "O" seemed to work -not always though-, but other keys didn't. I logged in as guest user, since no password is required for that, and tried typing a URL on Google Chrome, just to see what happens. there I noticed that sometimes the F letter key would work as right arrow and A as left.
I should finally note that certain applications would not open lately (for the past weeks) and would "quit unexpectedly" (HDRtist and Inkscape, to be specific).
So, maybe it needs a Disk Utility Repair? Is it possible that this would solve both problems? But how do i do that if I can't log in as admin?
It would be better to find a way to solve this on my own without having to pay for the repair.
Any ideas?
I know it's a common problem and that it's been posted many times, but most answers on other discussions have confused me so far.
I've read about the tape under the battery thing, but I'd prefer a different solution if anyone can offer one.
Thank you in advance. I appreciate it.
MacBook Pro, OS X Mountain Lion (10.8.2)