How to Troubleshoot a Dell 8400

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By Julie Elefante
eHow Contributing Writer

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Troubleshoot a Dell 8400

A common misunderstanding about troubleshooting any computer is that there is a specific answer for every given symptom. For instance, if your computer is having a connectivity issue or Windows is not going to the proper websites, you may automatically think that you need a network card replacement. However, the computer components that the Internet needs to properly function also include the network interface cable, and the port on the broadband Internet connection. Due to numerous variables like these, troubleshooting takes trial and error.

Difficulty: Challenging

Instructions

Things You'll Need:

Operating system CDs

Step 1

Back up all of the important information stored in your computer. Make sure that you have the proper CDs to re-install your operating system. Dell 8400s come with Microsoft Windows Media Center, which includes a Windows XP Professional CD and an Upgrade to Windows Media Center CD.
Step 2

Isolate the error and symptoms that you are receiving by writing it down, or photographing it. You only need to write down or take pictures of pertinent information, like "rundll.exe" file errors at "A0 AE AA BA XX".
Step 3

Uninstall any recently added software, updates or patches that may be causing the issues.
Step 4

Determine if recently-added hardware is causing the problem. Remove hardware components and USB devices to test how your computer runs without them.
Step 5

Replace all hardware and software components. If possible, replace components with updated or newer components such as a different sound card, or software updates to Microsoft Windows Media Center.

Tips & Warnings

Windows Media Center allows you to watch TV on the computer, so make sure that all required drivers are installed to troubleshoot that particular issue. If the proper updated drivers are not installed, you cannot continue diagnosing the situation. Most hardware issues can be solved by simply switching out the affected part such as a CD/DVD drive that is not functioning. A professional may be required to remove software viruses and adware, depending upon how extensively they have infected your computer. If you need to remove the cache on your system, or repair your registry, look for CCleaner. This reliable software removes information in your registry that isn't being used anymore, and cleans your system efficiently without the hassle of knowing what to look for.
If the issue requires you to go into the registry, do not proceed unless you have the appropriate computer knowledge. It is possible to cause irreversible damage to the operating system in the registry. Always make sure that the computer is not plugged into the wall outlet when inspecting, adding or switching out the hardware. Do not use outdated anti-virus software. If the software is not compatible, it will be difficult to remove. Download software like Avast Antivirus, which is free for home use.

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