So last time I posted a problem (which is the same as now); I was playing D2 and during the vault encounter (Last Wish) my screen monitor blacked out and I heard myself leaving the fireteam. After that I probably got an error message (which I couldn't see since my screen was black but I could hear an error sound when pressing keys on my keyboard). Now the last time I had this issue I updated my BIOS and it didn't happen for about 3-4 weeks. Now it's back and I'm not sure what to do about it! EDIT: The last time it happened I was doing random stuff, this time it was during the vault encounter.