Dell D420 Guides, Service Tag and Microsoft Windows License, Click Start → Help and Support

	Guides.
	2. Click the User's Guide for your computer in the list of online documentation.
• Service Tag and Express Service Code	Service Tag and Microsoft® Windows® License
• Microsoft Windows License Label
	These labels are located on your computer.
	• Use the Service Tag to identify your computer when you use
	support.dell.com or contact support.

• Enter the Express Service Code to direct your call when contacting support.

• Solutions — Troubleshooting hints and tips, articles from	Dell Support Website — support.dell.com
technicians, online courses, and frequently asked questions

•Community — Online discussion with other Dell customers

•Upgrades — Upgrade information for components, such as memory, the hard drive, and the operating system

•Customer Care — Contact information, service call and order NOTE: Select your region or business segment to view the appropriate support

status, warranty, and repair information site.

•Service and support — Service call status and support history, service contract, online discussions with support

•Reference — Computer documentation, details on my computer configuration, product specifications, and white papers

•Downloads — Certified drivers, patches, and software updates

•Notebook System Software (NSS) — If you reinstall the operating system for your computer, you should also reinstall the NSS utility. NSS provides critical updates for your operating system and support for Dell™ 3.5-inch USB floppy drives, Intel® processors, optical drives, and USB devices. NSS is necessary for correct operation of your Dell computer. The software automatically detects your computer and operating system and installs the updates appropriate for your configuration.

	To download Notebook System Software:
	1.	Go to support.dell.com, select your region or business segment, and
		enter your Service Tag.
	2.	Select Drivers & Downloads and click Go.
	3.	Click your operating system and search for the keyword Notebook System
		Software.
	NOTE: The support.dell.com user interface may vary depending on your
	selections.
• Software upgrades and troubleshooting hints — Frequently asked	Dell Support Utility
questions, hot topics, and general health of your computing
environment	The Dell Support Utility is an automated upgrade and notification system installed
	on your computer. This support provides real-time health scans of your computing
	environment, software updates, and relevant self-support information. Access the
	Dell Support Utility from the		icon in the taskbar. For more information, see
	Dell Support Utility.
• How to use Windows XP	Windows Help and Support Center
• How to work with programs and files
• How to personalize my desktop	1.	Click Start → Help and Support.
	2.	Type a word or phrase that describes your problem and click the arrow
		icon.
	3.	Click the topic that describes your problem.
	4.	Follow the instructions on the screen.
• Information on network activity, the Power Management Wizard,	Dell QuickSet Help
hotkeys, and other items controlled by Dell QuickSet.
	To view Dell QuickSet Help, right-click the			icon in the Microsoft® Windows®
	taskbar.