If you are not sure how to use use or find and download drivers, try programs that do that for you
SlimDrivers (I recomend this one, you have to download each missing or outdated driver, but you get better drivers and faster download speed)
https://www.slimwareutilities.com/slimdrivers.php
or try
iObits package of driverbooster (downloads automatically, but slower download speed from my experience)
http://www.iobit.com/en/driver-booster.php
Edit:
As Wolfshadow has mentioned, if you are unable to access the internet from you laptop, use another pc and with a USB or some sort of external storage device, download the program, or drivers if you know where to get them and transfer them to the device. Plug it in in you driverless laptop...