[HELP]BFE services stopped and boot not working

Hello sevenforums member
am in two new problem in my win7 32bit pc
First is BFE service not running.
first i open services.msc here i don't found any BFE service.i google it i so i found a registry editor file for repair bfe after installing reg file bfe show in services but an able to start this service when i try to start its show

windows could not start the base filtering engine service on local computer.
Error 5:Access is denied.

pls provide 100% working solution
and this is my second problem
my pc doesn't boot any windows os dvd or cd i try to install win7 but dvd doesn't boot on startup .i am trying some option in BIOS in Boot.
i select 1st boot device to cd-rom group and 2nd boot device to hdd group but its not working and i try one more thing in BIOS in Boot menu i change in CD-ROM Group boot priority.first its select to disabled when i clk on its show two options for select first for select SM-hp DVD-RAM GH60L and 2nd for select disabled.i selecting DVD-RAM Option.when i reboot pc.pc boot win7 dvd but when i try to install windows it's not installing and show

Load drive error
A required cd/dvd drive device driver is missing. if you have a driver floppy disk, cd, dvd, os usb flash drive please insert it no.
Note: if the windows installation media is in the cd/dvd drive.you can safely remove it for this step.
this is it.

thanks in advance.
asap help me please.