2 things to note with Conexant:

Conexant does not manufacture modems. They just design the chipsets for the technology. So, if you have an issue with your modem, you have to contact your manufacturer for information regarding drivers, installations, repairs and updates.

Similarily for PC-TV Tuner Card and Video Capture Card Support:

Conexant does not manufacture PC-based TV tuner or video capture cards. If you have an issue with your TV tuner or video capture card, again contact your manufacturer for information regarding drivers, etc...

Go to the official Conexant driver downloads and support section. If you are having driver issues updating your drivers to the latest version from the official Conexant website in many cases will solve your problem.

If this still doesn't help solve your problem, or if you have any other problems getting your drivers working, or getting specific driver errors, post your question in the Conexant drivers forum section of this website.

Note: Please include your operating system, EXACT nature of your problem, error messages, device details like model numbers (be specific), you will generally receive an answer to your problem within a few hours.