Can anyone please tell me where or how I can update the video driver for my laptop? I have gone to Toshiba site but when I put the model number it will not display in the drop down menu. t is model PSL33u-026018 . The top half of my Toshiba Satellite laptop (Windows XP) is shaking , not all the time, but when it does it goes from side to side really quick and maybe uo and down really quick. If anyone can help me I will appreciate it. Thank you so much.