Hi I have a Sony VPCCW1S1E. 18 months trouble free and now about 4 times a day it crashes with "Display driver NVIDIA windows kernel mode driver version 259.57 stopped working and has successfully recovered". If you Google "display driver nvidia etc" there are hundreds of entries so this is clearly a common problem and I am a bit disappointed I am drawing a blank with Sony Support. As it is out of warranty I don't feel like footing the bill to investigate what almost certainly is a very common design/manufacturing fault. Help, anyone??