This issue could be due to compatibility problems between the Motorola modem driver and Windows 7. To solve this problem, you can try the following steps:
- Make sure you have downloaded the correct and latest driver for your modem model and Windows 7 version.
- Uninstall any previously installed modem drivers.
- Disable any firewall or antivirus software temporarily.
- Restart your computer and enter the BIOS to disable the built-in modem (if applicable).
- Install the downloaded driver, following the provided instructions.
- Restart your computer again and enable the built-in modem (if disabled earlier in BIOS).
- Test if the modem is working properly now.
If the problem persists, it is recommended to contact Motorola support or visit their official forums for further assistance.