I have been using Toshiba Mini-notebook NB505-N500BL laptop from last 4 months. Initially it was running Windows 7 32 bit version but then one of my friend removed the 32bit Windows 7 and installed the 64 bit Windows 7. After this installation of 64 bit Windows 7, my Video controller started malfunctioning. I have realized that this must be happening as I have not installed the drivers concerning the video controller. Does anyone know where I can find the video controller for my Toshiba Mini-notebook NB505-N500BL laptop? Please help me.