Thank you so much for your time, i'll try that
Just adding if it's Nvidia, you may need to go to the control panel and look for the rotation settings in there, it should be in the "display" category.
Intel's display driver should be in the tray, right click the icon and choose the right rotation settings.
Catalyst (AMD) should work pretty much the same way as Intel's, right clicking the AMD/ATI/Catalyst icon and selecting the right rotation setting.
Hope this helps!