|Little confused. Are you saying that you set up two monitors and they're set as extend but your start bar is on the broken display? You can change that on the display setting make it as display number two. (Primary and secondary) |
Are you saying you want to boot your PC to the external monitor? Usually if it's a laptop, just fold down your display and it'll duplicate to your external.
You don't need to go to bio, try FN+f8 (mostly for dell, if that doesn't work find a FN and toggle for Sony, should be a display icon.)