I have tried to use a secondary LCD display on two different Acer laptops and BOTH have been screwed up. The graphics cards just crap out after a while and the primary screen goes black and refuses to function.
I think the issue may be that I had the display extended and then put the PC to sleep. I then unplugged the secondary display and tried booting again... which led to a black laptop screen, even though everything else seems to work fine.
How can I fix the laptop screen/graphics card?
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Does it crash every time you do the steps you listed? If so you can always try to return it under warranty but it may just be a bug with the drivers and not a hardware problem.