Hi V1p3r1987,
I'm not sure about the last things you've mentioned, but the point where your PC was "frozen" the first time, was the DTS-Test, first you have to activate SPDIF output because by default it’s muted.
Open a terminal, run alsamixer utility, find IEC958 mixer and unmute it by pressing ‘m’.
Then this should work, but now the bad news, I'm not sure if your system will work again without reinstalling, maybe someone else could help you out...
But since a new installation never took me more than 30 - 40 minutes, this should not be the problem...
greetz&goodluck
augalex