Bluetooth Serial Communications Driver (BTHMODEM) Service Defaults in Windows 7

Bluetooth Communications Driver by Microsoft Corporation.

Default Settings

Startup type: Manual
Display name:Bluetooth Serial Communications Driver
Service name:BTHMODEM
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHMODEM

Default Behavior

Bluetooth Serial Communications Driver is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Bluetooth Serial Communications Driver fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the BTHMODEM service is not running because of the error.

Restore Default Startup Configuration of Bluetooth Serial Communications Driver

1. Run the Command Prompt as an administrator.

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

sc config BTHMODEM start= demand

3. Close the command window and restart the computer.

The BTHMODEM service is using the bthmodem.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.