Windows operating system is a very popular and consists of very easy to use user interface. You can easily access any applications on the Windows computer. But sometimes when you try to access some graphic oriented programs on the computer, you may get ati2dvag.dll is missing error in Windows. Occurring of this error issue in your computer happens due to the corrupt or missing ati2dvag.dll file. The ati2dvag.dll was not found error is a very critical error and comes to the computer with many dreadful happenings like severe data loss, failure of the applications, unable to install or uninstall any files, etc. You should fix this issue as soon as possible. For this purpose, you can use the manual steps given below in the article or you can also download and install the Advanced System Repair tool recommended in the article.