So since a while now my friend has been having an issue with Guild wars. Every time he's playing, his screen randomly but constantly turning black. He can't see anything on the screen at all no msgs nothing also it goes black for around 5~10 seconds and comes back. We tried everything like: changing minitors, the monitor's cabale, installing different versions of his nvidia graphics driver and even completely formatting his PC (from windows 7 to 10 and then back to 7, both has the same issue). Lowering the settings also didn't help at all and this last format we did today, screwed up the game even more to a point that he has it every 3~5 seconds about every 10 seconds constantly.
Any help would be super appreciate as we lost hope to what can cause his issue.