This may come on the cd/dvd for your printer. Lack of details means a guess. Try posting computer make, model, and OS.
PS. May find the drivers here. https://support.hp.com/us-en/product/hp-photosmart-c7200-all-in-one-printer-series/3204782/model/3204784/drivers
My computer tech tells me that this printer has magically lost it's wireless capability. Works fine every other way and when wired. Does this seem reasonable and is there a work around?