Is screen just black after you turn it on?Not able to log in for a while now due to a broken laptop
It still starts up but screen is not doing anything...
Hopefullly back soon!
Close lid of laptop, plug monitor in and start it up. should display on external monitor.
If you require to open lid to power on, plug monitor in start it up and use your shortcut keys to switch display modes for laptop/dual screen/extended screen.
Dual screen should mimic laptop to monitor. Although you probably still want to fix your laptop screen but this is a way to work around the issue. I have had same issue with laptops in past and was able to use this workaround efficiently until I could get the laptop repaired.
^ This is the right answer. it seems your laptop screen burned out, it shouldn't be too expensive to fix. To toggle between projections, press the windows key + P to switch between duplicate, extend, projector only, or disconnect projector. You will want to do duplicate to monitor that you plug in to your laptop.
Cheers
-Hyp