First, Did your friend REUSE the Win XP on another system, and is that system still in use.
.. The Licence is only good for use on ONE system at a time.
2nd is this a store bought, or home build.
.... For store bought vist the manuf web suppot page, should have all the drivers you should need.
... If Home build, visit the Manuf Motherboard driver page for needed drivers.
With a barrowed Installation disk, pass on entering the key during install. wait until you have let windows do it's updates, installed needed drivers, and installed your programs - TEST it, if all is well, then activate using your key code.