I'm using xp , no screen problems ,have got the latest patch ? 1.0005 .As for hints ,search dead bodies / buildings for things to sell / trade , make money to buy better weapons & equipment . Talk to friendly characters for jobs ,this helps to explore different areas ( new buildings ) get better equipment . Enemies ?? try and get a sawn- off shot gun to kill most things with four legs, against other stalkers / soldiers use rifles ''press 0 / 9' to change to ''single shot'' firing for more control ,use ''burst - firing' at close range ,later on you should guns with scopes for more accuracy. Hope this helps.