I have a feeling my graphic card is bad. My problem started after I upgraded my memory and then the operating system to Tiger. First it was running REAL slow then it started to make weird noise and final something happened and I dont know what the screen is looking weird. Its got mix of colors and lines across the screen diagonally. Yesterday I did removed the extra memory that I had purchased and clean installed thinking it might help during install my screen is fine but after the install it goes wild again. Any idea what could it be.???? 
