How to reset the default monitor on Acer 2920, computer laptop think always connected to an external monitor

Hello, I hope you can help me! I have a laptop Aspire 2920 with Windows Vista Home Edition O.S. It starts and works fine except that after I used it with an external monitor (a tv screen) on the possibility of using the external monitor, it only now starting to think that the monitor is the flat screen tv and doesn't recognize the normal screen of the laptop. The laptop screen is now "pixeled" and shows only like 2/3 of its total width. I checked in Control Panel and it has recorded as the 'normal' monitor flat screen, but I can't way a find to tell the computer that the monitor is the same as usual and not the flat screen tv. Thank you!!!

Dear Lawrence,

I ve solved the problem.

Do you have your suggestion to reset and did not work, but keeping your idea, I hooked to an external monitor, mounted in Control Panel, remove the "non-existent" monitor in the device section.

At this point, I had no image at all in the laptop and only the external monitor.

Turn off the computer and then reset the power supply.

Because the computer did not all other monitors, he then had to use the one by default with the default resolution, etc..

Thanks, it was a great help!

Tags: Acer Laptops

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