After restart navigate to your computer manufacturer's support site to download and install the latest drivers for your graphics card. When the uninstall operation is completed restart your computer.ģ. Navigate to Control Panel > Programs and Features and uninstall the currently installed VGA driver.Ģ. At Visual Effects tab, check the 'Use visual styles on windows and buttons' option and click OK. At 'Advanced' tab click Settings at 'Performance' section.Ĥ. Click Advanced system settings on the left.ģ. Click the Start button, right click on Computer and select Properties.Ģ. Enable Visual Styles on windows and buttons.ġ. * Note: If the service is Stopped then click Start. In Services control panel right click at the Themes service and choose Restart.

In the Search box, type: services.msc & click OK.Ģ.

Press Windows + R keys to open the run command box.

Open Windows Services control panel: To do that: For that task follow the instructions in this guide: How To Scan Your Computer for Viruses and other Malicious Programs. The first step to resolve the problem 'cannot change basic theme', is to ensure that your system is virus/malware free. Scan your system for Viruses and Malware. How to FIX: Cannot Change Theme – Aero Themes are Greyed Out.

This tutorial contains instructions to fix the following problem in Windows 7: Theme cannot be changed – Themes Greyed Out. Instead of that, all the other settings in the personalization panel are enabled (Desktop Background, Windows Color, Screen Saver, etc.), expect to select a different theme. The following issue has occurred in a Windows 7 based computer: Windows changed to the basic theme and the user cannot change the theme because, when the personalization settings are opened, all of aero themes are greyed out.

Windows 7 basic colours