I completed the step 1, but when I'm going to step 2, there is a big noise. I'm using Windows 7 and it worked yesterday. What can I do?
In order to fix the issue, I suggest you upgrade the software to the latest version. For this purpose, remove it using its uninstaller or the Add or Remove Programs feature (Control Panel > Uninstall a program), run CCleaner and download and install its latest version. After that, run the software and follow the instructions provided by the developer. If you still have issues, update your sound card drivers.
