No display after boot, disabling Intel driver fixes.
I've had a weird problem that I've now solved so want to share the solution.
Surface laptop was starting but had what appeared to be driver problems. The keyboard and touchscreen were unavailable during boot and windows install.
Post install I was able to get the keyboard working by installing drivers.
Touchscreen was still disabled.
Upon installing the Intel display driver the display would go black and I was unable to operate. Had to enter safe mode and disable Intel driver.
I figured it must be a screen issue so replaced screen. Same symptoms so thought motherboard. No, replaced that and still same issue.
I have now determined it is the connection near the audio jack that was causing these issues.