External monitor is not recognized by Windows7 (only 1 monitor is displayed in the Windows7 resolutions settings)
Tried:
*Exernal monitor by Displayport
*Exernal monitor by Vga
*Installed different graphic drivers for Zbook15 from HP site (NVIDIA en INTEL driver).
*Checked BIOS settings for graphic card settings (not available!)
Please let me know what I can try more