RE: My DELL XPS 15Z screen issue.
I too installed an oem version of Windows 8.1 on my Dell XPS 15Z laptop and have the same problems your are
having with the screen. I installed dells Windows 8 drivers but I still have the same problem. I think Dell wants us
to buy their new updated Dell XPS 15 (9530) laptop which cost close to $2,000.00 dollars. Windows 8.1 is way
faster than Windows 7 so I'm going to keep it and hope one day Dell will find it in their hearts to develop the
drivers for the Dell XPS 15Z Windows 8.1 install.