Joakim

Now works well as others has stated! Thank you! 

@Ined I've deleted .minecraft folder and removed the launcher completely from the harddrive. I went to minecraft.net and downloaded the launcher again. Install was sucessful it said. Tried opening it via the desktop shortcut, but same issue remains for me, nothing happends, and no new .minecraft folder has been created. 

Same here, from Norway. Worked yesterday but not today, does a spin when trying to open but fades away almost immidiately. Did everything I could come up with to fix it, to no effort. Trying compability mode in Windows Vista to see if it would install a previous launcher, nope, it will just do a spin and fade away. Reinstalled it completely, deleting both launcher folder and .minecraft but nothing seems to solve it.  

Yes, I waited till he left to make sure. And then tried pushing him back in, but it didn't work.