How do I get the necessary drivers I need for my laptop?

I have a Toshiba Satellite P75-A7200 with the model number PSPLNU-00H004. I know that I could go to the Toshiba website as I have just looked that up. But it seemed like it had a whole hell of a lot of drivers that I didnt necessarily need. I only want the required drivers. Is there any program that I could download that would tell me only the required drivers I need for my particular computer? I will be installing windows 7 on my computer. But it is not a manufacturer CD. I downloaded and burned a windows 7 cd. So I will need to put the drivers on my laptop separately. Or, should I simply do the windows update? If I do the windows update until there is nothing that needs to be updated, will that be good enough? Thanx