You must have seen many Windows themes on the web, that you can apply on your Windows installation to change its look and feel instantly.
However, by default, Windows do not allow any third party themes to be installed. To use third party themes on Windows, you must patch the operating system.
There are many free and paid tools that lets you patch Windows so that you can use 3rd party themes over it. One of such tools, which is also one of the best, is Universal Theme Patcher.
Universal Theme Patcher is a UxTheme Patcher and works fine on Windows 7, Vista and XP. It also works for both 32bit and 64bit operating systems.
To patch Windows 7 using Universal Theme Patcher, first download this tools from here. Run the downloaded executable file and choose the language. It will then detect the operating system, along with the status of the system files that will be patched.
It will then ask you if you are sure about patching. Click on Yes to proceed. On next screen, click on the Patch button for each file one by one. After patching all the files, restart the computer.
After a file has been patched, the restore button will get activated so that you can restore the file in future if you see some issues with the Windows after patching.
That’s it. Now you can use any third party themes on Windows easily.
How To Apply Third Party Custom Themes on Windows
First you must patch Windows as explained above. After that, copy the downloaded theme folder to %windir%\Resources\Themes\ folder. Now double click on the .theme inside the theme folder you just copied to apply this theme.
Here %windir% refers to the folder where Windows in installed on your computer.