Chosen Solution
I did this as a screw got stuck in the CPU fan. After the fan was saved, I started reconnecting everything back. I turned it on and noticed that the screen wasn’t turning on anymore. However, I can still connect to an external monitor and everything works fine. Going into Device Manager, I can see that the monitor is shown as working properly but it may not be getting power? Any ideas?
Did you damage anything in the process? Remove and plug back in the display cable and see if it makes a difference.
