If you're looking to fully format C: and do a fresh install, rather than use a recovery partition or image provided by the OEM. I'd go online and check that all the supporting drivers are still available on the OEM's website.
It won't be a problem on reasonably recent laptops and almost all provide a recovery partition or disk, but you mention XP.
I've come up against this quite often when asked to reinstall or update someone's OS on an old laptop. Either no drivers, or no drivers that support the newer versions of windows on that hardware.