To install AVG PC TuneUp, follow these steps: Click here to download AVG PC TuneUp. Right-click the downloaded setup file and select Run as administrator from the context menu. In the User Account Control dialog, click Yes to allow AVG to make changes to your PC. Select your preferred language from the drop-down menu, then click Continue. Type your license number and click Install now. Click Scan now to begin using the program. If you are using a trial version of AVG PC TuneUp or your paid license has expired, you can activate the product via the AVG PC TuneUp interface. Open the AVG PC TuneUp interface. Click Help, then select Activate product from the drop-down menu. Type your license number into the Product key field and click Next, then click Finish. AVG PC TuneUp is now activated and ready to use.