1. Restart the Theme and AERO services.
Click start and type SERVICES.MSC on the search box, and then press enter.
Look for Desktop Windows Session Manager - Right click and select properties
Now look again for THEME and do the same thing - stop, start and set to automatic.
Make sure to click apply to make the changes.
2. Uninstall recently installed updates
Windows updates is one of the culprit, if your Aero stopped working after Windows automatic updates installation, uninstall the updates. For example one of the updates that cause this is KB2670838 (Platform Update for Windows 7 and Windows Server 2008 R2)
To do this go to Control Panel - Program - Program and feature - Installed update.
Right click on the update you want to uninstall and select uninstall.
3. System restore
There are some changes that made on your system taht cause this to happen, so what you need to do is to roll back this changes by using system restore. you can read this on my other blog.
4. Adjust your monitor color
Most of the time windows will automatically set your color to 32-bit, but sometimes it only set 16-bit. So change it by right click on desktop - screen resolution - advance setting - monitor - color.
|Click ok and Apply before close.|