BFBC2 Does not start Help!!

Well, I can't really help you problem there.
Try re-installing.
Maybe updating your graphics & sound cards.

i had the same problem i re-installing the game
and then it work fine for me

If you have Nvidia go to : Nvidi*****m
You can also to do manually Start>Controll Panel> Hardware & Sound>Device Manager.
And then you find your graphics card, > properties > Update Drivers.

Sound and audio drives are stuff inside your computer if you want to update your graphics card and you have either ATI or Nvidia then you can go to their site and update there

Or as I said, you can update in manually.
It's easier manually as on the nvidia site you have to put it the types of it and other information, if you are not good with graphic cards & sound card, I'd recommend to do it manually.
Or just try to re-install it.

Have you tried got to Nvidi*****m or, what type is your cards? If its Nvidia go to Welcome to NVIDIA - World Leader in Visual Computing Technologies.
Or if it's ATI, I'm not sure what the site is, you google it

Well, lets see what other people say, I've gone to my edges of knowing about Graphics & Sound card to help you.
I'm not sure what to do about it for you mate.

I'm sure nextgen will be able to help you as he is smart with Computers & Technology.
But I'm thinking of what could be the cause of the problem.
Have you played it before? on the same computer or what?