|If you have a video out port, try connecting to the TV. It could be that your video driver uses Nvidia and if you turned off without shut down procedure, the application loses the dual-view ( or clone) option and only the video mode is available. This worked for a tenant where I live so I know it works.|
Otherwise, the ram itself may be incompatible with your laptop. You need to check the specs for your laptop before upgrading ram. You just cannot use anything in laptops, they have specific needs.