Apologies if this is not the appropriate catagory but i had trouble finding a suitable one, here is my problem:
I was messing about with a file using winrar, (sorry i cant remember which file it was) i right clicked the file and clicked 'open with' i chose winRAR and it screwed up and decided every single program on my computer could only be opened by winRAR, (every icon was changed to the winRAR icon etc.) then in my frustration i deleted winrar hoping it would then sort itself out, it didnt. (i realise this was stupid now) i then restarted my pc to find things worse, the dock at the top of my screen could no longer start up along with numurous other programmes. somehow i managed to change it from winRAR to itunes, and then every time i opened a file it opened itunes instead, ideal if i wanted itunes and only itunes, but i dont -_- i then found i can access all the programs via finding them directly (my computer, etc.)so i managed to open the internet and type this for example, i searched google i found several problems just like mine, however none of the solutions worked. i then changed it to adobe reader, again every program opened adobe reader, and then to some internet explorer thing, i have no idea what has happened.
Basically i need to set every programme to its default startup file thing (if that makes any sense at all) if you need more information as to what ive done then feel free to ask, any help is welcome!
P.S. The Attached file is a .png of my computer, notice no dell dock at the top, the three programs at the bottom left are all using the same icon for what ever programme its changed to now, (the programmes should be like this from left to right: Internet Explorer, Hamachi, Norton 360 (The one with the green tick)) Also notice the open start menu, with all the programmes using the same icon, all opening the same thing, despite what they should open. like i said i have full acces to everything on my computer via my computer and navigating to them, so why dont these work? (the programmes at the bottom were opened via my computer etc.) Excuse the background.
Thanks in advance.