i got a half life dvd's from my local piracyman. when i popped the dvd in, it diid not autorun.so i clicked on the icon.there were main two files, one a .exe and another a ms-dos file.i clicked on the .exe but only intro and the credits abd copyrights came.so i clicked on the other file and then a screen with the words loading apperared. i waited 4 it to load 4 some time..then suddenly my system restatrted. when i logged into windows, it gave me a "windows has recovered from a serious error message"...wat should i do now?? is it really tat serious?? i can't find anthing worng with windows