Did you hit the keys that makes you toggle to an external display. Sometimes you just can't connect an external monitor, you have to hit keys that toggle between display on laptop only, display on both laptop and external or display on external only.
SOURCE: COMPAQ EVO n600c DIsplay back light out
Your liquid display has been probably damaged because of dropping it down, laptop LCD screen is one of the most delicate part of a laptop, it needs a tender loving care from the user when we just only cleaning it surface with a provided cleaning solution for it.
You said that it was dropped its much probably that your laptop LCD screen broke. I had the same experience like you when my sister pulled the strap of my bag were my laptop was there i place on top of my cabinet so that she cannot used it when I'm away. But she sees and because she wanted to play games she pulled the bag down and my laptop bangs on the floor.. And it was broke.
For you u can still bring it to the service center to replace your LCD or for some availabity of stocks you can order it directly from the Main service center probably US.
When i hear that story from you the memories of like what also happen to me came back.. tsk..tsk... So when it happens I learn and give me a lesson that my laptop is much safer when i putting it and do my work with my laptiop on the floor. And hide and keep it under the bed with pillows on guard.
tnx
-micro
SOURCE: Acer Aspire 9303WSMi - 17" LCD Screen is showing coloured static..
More like the LCD Inverter Board..a loose connection would not cause that, unless you pulled the video cable by openening and closing the lid, but again that too is highly unlikely..
SOURCE: Acer Aspire 5585 Laptop LCD Problem
Have you tried booting into "Enable VGA" mode via the "Windows Advance Option" screen? By press F8 before Windows XP loading screen comes up. In this mode the Video Card drivers are disabled. So if your screen appears normal and not white in this Mode then it is your video card drivers which are causing the issue.
SOURCE: acer laptop has developed a fully dark screen
I am assuming that you have tried switching from external monitor output and local monitor. There should be a hot key on the keyboard to switch it. Also, try looking to make sure the driver for the display is up to date. I f it was update recently try rolling the driver back. If you need help with doing any of this post a comment. Hope this has helped some.
SOURCE: Laptop black screen during boot, then normal in Operative System
is it affecting your pc
you can change the bootup display time if you want
but I would leave it as is if your system is not affected by it
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