[Kymmy]

Windows will use whichever display it finds first as the primary, Go into the Nvidia control panel (right click on the desktop and select it) then using the "SET UP MULTIPLE DISPLAYS" you can select if you want to use more than one display, which mode you want to use it in, and which is the primary.

If you don;t have nvidia drivers installed in the bios sometimes you can either turn off the internal display or make the PCI/e display the priority, but not all bioses allow you to do that.

Check the hardware manager for both display adaptors

---------- Post added at 10:33 ---------- Previous post was at 10:28 ----------

Confirmed, in ADVANCED BIOS FEATURES you should have a INIT DISPLAY FIRST set that to PEG