Ok, lets make this simple. Formatting, and installing your OS right after getting your laptop from Dell is totally silly, and a waste of time. Just perform the following: start/run/msconfig/. Now de-check most everything, once thats done, go to add-remove and uninstall what you don't want.
Re-boot, perform disk clean up, and defragment.
After this your Dell laptop will run just as fast as if you formatted, and there will be no need to download, install, and configure drivers.