I did something in CompizConfig Manager and the launcher and other bars was gone!
- I tried using the set background from right click menu and checked if it was a driver problem, but it was not.
- I also tried keyboard shortcuts for terminal etc. but none worked.
- I switched my PC off and logged in with standard user which doesn't have a password and it worked completely.
So I went back to the account with problem (admin) and made it a standard user and the other user an admin but I forgot to set a password for the other account.
Now I can't do anything in the other account because it requires admin password and my not working admin's user password doesn't work, and the other user which I made admin doesn't have a password so I can't do anything like access hard drive to save my user files to windows partition, delete account, delete compiz etc.