Often when you format your windows pc or laptop you will boot up to a desktop and find you have no sound or the video is not working at the correct resolution, etc.
First step is to check the cd’s that came with the computer for a driver’s cd.
If you are lucky your lan or Wlan driver was put on and you can access the internet. If not then go get them at the manufactures website. This will help greatly in getting the other drivers needed.
It is all ways good to have a spare computer working and on the internet so you can download drivers and put them on a USB , or Cd and be able to get them on to the pc you are working on.