I guess you use VISTA... This problem happens most of the time when you change your OS... There's nothing to fear...To get any driver for hp notebook, go to the hp.ca website...go down to driver and software download, type in the product number for ur notebook, then it'll ask you for the type of operatin system u have, select ur os and then it'll take you to a page wid all the drivers for ur notebook type..if its listed on that page then its there....otherwise do not download it from any other site, cause it just wont work! If this also doesn't work then Download the latest bios version and install it... This will surely work...