There were some known viruses able to bring that service down on Windows 7 - this service should definitely be there- have a look at the notes here:
http://blog.crosbydrive.com/?p=265
According to microsoft Technet :
http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/530e05dc-c97c-405e-b961-6bdf613ca443
there are some workarounds to bring it back:
- try sfc /scannow or :
Method 1
Use sc .exe to create the Windows Service. Sc.exe uses the following syntax:
Syntax1 (use Syntax1 to run Sc.exe)
sc [Servername] Command Servicename [Optionname= Optionvalue...]
Syntax2 (use Syntax2 to display help information, except for the query command)
sc [Command]
Please refer http://support.microsoft.com/kb/251192
Method 2
Also you may backup the Registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BFE from another computer of same operating system .Then copy to your computer and restore the Registry.