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Windows 7: My Asus monitor suddenly doesn't recognise its highest resolution

26 Oct 2012   #1

Windows 7 Professional 64 bit
My Asus monitor suddenly doesn't recognise its highest resolution

I'm not sure if this is the right place to ask about this, but I'll try.

Yesterday everything was working fine with my Asus VE228T that I use as the main display on my left (and my laptop screen works as the secondary screen on the right). The resolution is 1920 x 1080.

This morning things were just weird, my Asus wasn't displaying anything and I went to the Screen Resolution properties and tried doing what I've always done if the screen hasn't been on, choosing "extend these displays", didn't work right as the laptop screen remained as the main one (usually the Asus has switched as the main display by itself) and the Asus did turn on BUT with my laptop's resolution! And I have never had to tick the "make this my main display" for the Asus, but I had to do it now, and even then it remains as the display 2 and my laptop screen as the 1. the Asus screen is now on the left as somewhat the main screen, but I can't set the resolution right anymore! The highest now is 1600 x 1200, instead of 1920 x 1080. What is wrong with my Asus??

My System SpecsSystem Spec
26 Oct 2012   #2

Windows 7 Professional 64 bit

Oh my! I ran CCleaner, cleaned my registry and it works just fine now! Any idea what was wrong as I'm still curious?
My System SpecsSystem Spec

 My Asus monitor suddenly doesn't recognise its highest resolution

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