In addition to this article, you should make sure that your graphics card supports Aero and that graphics driver is up to date. However, if your computer came with Windows 7 this should not be an issue.
Finally, Aero could be disabled in your registry. Before I proceed to explain how to check and edit your registry, I must warn you! Editing the registry can cause permanent damage to your Windows installation. Please backup your registry and know what you’re doing.
Go to > Start and type > ‘regedit‘ into the > search option. Launch regedit and browse to > KEY_CURRENT_USER\Software\Microsoft\Windows\DWM. The value of the entry > ‘EnableAeroPeek‘ should be set to 1, rather than 0.
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