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Can't detect it's own monitor


New Member
My Surface Pro won't display anything on it's own monitor but works when I attach it to an external monitor. It just doesn't detect it's own monitor! I went into Screen Resolution and in the Display Drop down list it only displays my external monitor.
I've already updated all the drivers including windows update but it was no help.

From all the tests I've done it looks like the monitor is broken or something inside the Surface Pro has been detached but I want to make sure!