Notes about the BCM file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The BCM file type is primarily associated with 'Compaq Easy Access Keyboard Driver'. 7 button (plus D, printer, custom, volume, mute, and suspend) easy access keyboard driver file. Each keypad key has a .BCM file you can edit in any text editor.