Hi,
I recently purchase a Dell XPS 15 (l521x) with Intel HD4000 and Quad Core 3rd Generation nad NVidia 640M
When I updated to Windows 8.1 the HDMI out stopped working and also the brightness controls don't work anymore...
This laptop is brand new, only 1 week old... And all these problems... I tried everything, Installing older drivers etc... Nothing seems to work...
Will you please give me some advice before I throw it out of the window?