What you will have to dois to take each component seeratly and go to the manufacturers site to see if they have a Win. 7 driver. For example the builtin sound chip is a Realtek AC97 so you would have to go to the Realtek site and get a Win 7 driver there.
The other way of doing this is to go to the Microsoft support site and see if they have a selection of drivers there.
I would have thought that when you loaded Windows 7 there would have been some generic drivers on the disc for the different components in the laptop.