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02 Nov 2012  

Microsoft Community Contributor Award Recipient

Win 7 Pro x64 / Win 10 Pro

Do Option 2 of this tutorial SFC /SCANNOW Command - System File Checker it will not harm any data or programs you have installed it will try to find and repair any corrupt system files that you have.

Click on start button in the search box type Aero and look for Find and fix problems with transparency and check for problems.
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Click on the Start Button type in Services In the search box and then click on Services
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Scroll down until you see Desktop Windows Manager Sessions Manager select it in click on the Stop text and let it stop after that click on Start text and see if that works. Your screen may blink when you do this.
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PS don't use tuneup utilities again

My System SpecsSystem Spec