give you the option to mute the modem (normally done at initial set-up) but you can usually access this from your sign in screen.
If not, call your ISP for procedure
It's actually not a good idea to mute the modem. You could have a dialer placed on your machine & a hacker could make phone calls from it.
This happened to me years ago when I got my phone bill with calls from USA to Africa & England. A Virus scan found a dialer!
If you can alway's hear your modem, this won't happen.
How in the world can I stop that horrible modem noise I hear when I connect to the internet using dial-up? The volume slider doesn't seem to work. Is there any other way to stop it? Thanks!