Hello,
Please make sure that your drivers and DirectX version are all up to date.
The required DirectX version for A.V.A is DirectX 9.0c. You can download it from the official site of Microsoft: Download DirectX 9.0c End-User Runtime from Official Microsoft Download Center
Also do a full scan of your computer with CCleaner, which can be downloaded here: CCleaner - PC Optimization and Cleaning - Free Download