v Replacement or use of non-IBM parts or nonwarranted IBM parts. Allwarranted parts contain a 7-character identification in the format IBM FRUXXXXXXX.v Identification of software problem sources.v Configuration of BIOS as part of an installation or upgrade.v Changes, modifications, or upgrades to device drivers.v Installation and maintenance of network operating systems (NOS).v Installation and maintenance of application programs.Refer to your IBM hardware warranty for a full explanation of IBM warrantyterms. Be sure to retain your proof of purchase to obtain warranty service.In the U.S. and Canada, these services are available 24 hours a day, 7 days aweek. In the U.K., these services are available Monday through Friday, from9:00 a.m. to 6:00 p.m.Note: Response time will vary depending on the number and complexity ofincoming calls.If possible, be at your computer when you call. Please have the followinginformation ready:v Machine type and modelv Serial numbers of your IBM hardware productsv Description of the problemv Exact wording of any error messagesv Hardware and software configuration informationPhone numbers are subject to change without notice. For the most up-to-datephone numbers, go to http://www.ibm.com/pc/support/ and click SupportPhone List.Chapter 5. Getting information, help and service 27