Modem Service Defaults in Windows 7

Modem Device Driver by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Modem
Service name:Modem
Service type:kernel
Error control:ignore
Group:Extended base
Path:%SystemRoot%\system32\drivers\modem.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Modem

Default Behavior

Modem is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Modem fails to load or initialize, Windows 7 startup continues without error messages. The failure details are being written into Event Log.

Restore Default Startup Configuration for Modem

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config Modem start= demand

3. Close the command window and restart the computer.

The Modem service is using the modem.sys file that is located in the %WinDir%\system32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.