Mousse pointer turns like a stick

Hi thereThis is a fraustration I have been experiencing from a while, while flying the PSS B757 and for my surprise I started experiencing this same error with the Flight1 ATR.Everything runs smoothly and sometimes the mousse pointer turns like a stick and the crash happens. Sometimes a black screen and the computer restartes or it freezes and the black screen takes over. After the mousse pointer turns into a stick, one can proceede working with the mousse pointer stick until it freezes and crashesDid anyone ever expirienced anything like this?Please helpCan anyone give me some clue of what is happening?Much apprecciationZungaMY CONFIGAMD ATHLON II 2504 GB RAMATI HIS 4850 512MB (CATALYST 10.6)WINDOWS 7 64 BITFS 9