Two days ago I staarted having a problem with my graphics adapter. Firstly, Windows Vista sent up a message that there was aproblem with the graphics adapter and that the driver needed to be updated. I went to the NVIDIA website and downloaded the most recent update for the driver. That's when the problems really started. Now my system will not reboot unless I disable the graphics adapter, when I restart the first screen has rde vertical lines right across the screes, and the text in the second screen is all garbled and there are intermittent columns of dollar signs ($). In addition, I am unable to roll back the driver and Windows System Restore is not working for some reason. I have tried un-installing and re-installing the original driver but to no avail. DELL suggests that I do a PC restore but I would prefer not to have to re-install all my software etc.. Can anyone help?