OK basically I have a pc comp that`s about 2 and a half years old. It just recently started to beep whenever I start playing a specific game which is CSS(counter strike source). What happens is that when I first start and launch the game, everything is normal, but when I actually start to get into playing my computer starts beeping everytime I press a button on my keyboard, and to add to that it makes my game jerk like kind of a lag. If I don`t press any buttons than it`s fine but once I start to press the buttons to move in the game it starts beeping again and makes my game jerk kind of like a lag. The beeps only happen when im playing that specific game and my computer acts normal when I'm not playing . I don`t think my computer is overheating? I dont know why else my computer will act this way?