106 Appendixw w w . d e l l . c o m | s u p p o r t . d e l l . c o m CDs and DVDsNOTICE: Always use compressed air to clean the lens in the CD/DVD drive, and follow the instructionsthat come with the compressed air. Never touch the lens in the drive.If you notice problems, such as skipping, with the playback quality of your CDs or DVDs, trycleaning the discs.1 Hold the disc by its outer edge. You can also touch the inside edge of the center hole.NOTICE: To prevent damaging the surface, do not wipe in a circular motion around the disc.2 With a soft, lint-free cloth, gently wipe the bottom of the disc (the unlabeled side) in astraight line from the center to the outer edge of the disc.For stubborn dirt, try using water or a diluted solution of water and mild soap. You can alsopurchase commercial products that clean discs and provide some protection from dust,fingerprints, and scratches. Cleaning products for CDs are safe to use on DVDs.Dell Technical Support Policy (U.S. Only)Technician-assisted technical support requires the cooperation and participation of the customerin the troubleshooting process and provides for restoration of the operating system, softwareprograms, and hardware drivers to the original default configuration as shipped from Dell, as well asthe verification of appropriate functionality of the computer and all Dell-installed hardware. Inaddition to this technician-assisted technical support, online technical support is available atsupport.dell.com. Additional technical support options may be available for purchase.Dell provides limited technical support for the computer and any "Dell-installed" software andperipherals1. Support for third-party software and peripherals is provided by the originalmanufacturer, including those purchased and/or installed through Dell Software and Peripherals,Readyware, and Custom Factory Integration2.1 Repair services are provided pursuant to the terms and conditions of your limited warranty and any optionalsupport service contract purchased with the computer.2 All Dell-standard components included in a Custom Factory Integration (CFI) project are covered by the stan-dard Dell limited warranty for your computer. However, Dell also extends a parts replacement program tocover all nonstandard, third-party hardware components integrated through CFI for the duration of the com-puter’s service contract.Definition of "Dell-Installed" Software and PeripheralsDell-installed software includes the operating system and some of the software programs that areinstalled on the computer during the manufacturing process (Microsoft® Office, Norton Antivirus,and so on).Dell-installed peripherals include any internal expansion cards, or Dell-branded module bay or PCCard accessories. In addition, any Dell-branded monitors, keyboards, mice, speakers, microphonesfor telephonic modems, docking stations/port replicators, networking products, and all associatedcabling are included.