I know I need a new battery, but that doesn't explain why my laptop won't let me open anything like PowerPoint, excel, etc. the only things I can open are Microsoft word (only through opening an existing file), iTunes, and the Internet (also because I had a link in one of my word documents). Whenever I try to open something a window pops up saying file does not exist and another shows several icons and says .exe which do you want to open this file with. I can't download anything at all.