Lenovo ThinkPad Screen Goes Blank When Connected to External Display

Steps to Fix Lenovo ThinkPad Display becomes Blank When Connecting to an External Monitor or television

[waynegooch]

Thanks AarohanTec....a simple fix but Lenovo and so many others couldnt figure this

[dianavaiciute]

I can't get the bios page with F1 as there is a sound bottom. Can you help?
My laptop screen blackout after I plug hdmi to connect to projector.
Update: I got in to bios and did as you explain, but the screen goes black anyway. Any idea? My thinkpad is T470s

[allaboutfrench]

May I suggest you update and redo this video for 2023? People still need to hear it (without the background roaming sound). lol. If you write down the script, you can do it in 2 mn.