I bought me a Dell XPS 13 9343-4228. It came with Ubuntu 14.04 preinstalled. Because I accidentally deleted the X11 folder my system didn't work any more and I did an 'reset' which I found in the Boot loader.
Now I have very big problems with my system: it freezes randomly, when I start it sometimes nothing shows up expect the background and every time there is a little system problem window around.
Can you guys give me any advice? And when you recommend me reinstalling: Do I need any drivers or something like that?