Broken Laptop Screen can't see bios or windows installation

I have an dell 3500 g3 and the screen is broken and something else related to the screen doesnt work so fixing it is really expensive, almost same price as the laptop so I won'to do that.It works perfectly well with a HDMI Monitor but the problem is The first thing I can see on the monitor is Windows Starting before that everything is black.So when I try to Install windows or go in BIOS all I see is black on the external monitor.Probably the bios and windows installation shows on the laptop screen but it doesnt work so that doesn't help me.I searched everwhere I tried a lot of stuff and I didn

Question by dbsptr121 on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.