If you reinstalled the product, but the same behavior is encountered, try to completely remove any trace of the application from your PC. To do this, get Revo Uninstaller. With the help of this program, remove the MiraScan. Also, use AdwCleaner. After your computer is clean, download the latest version of MiraScan and install that. You can obtain a download link from its review page on Software Informer. Also, if you reinstalled your OS, make sure to visit the manufacturer's website, and download the appropriate drivers for your scanner. After you did all this, you should be able to use the device again.