For a limited time, the Troubleshooting and Maintaining Your PC All-in-One for Dummies 3rd Edition by Wiley is available for free. This eBook offers easy to understand instructions on how to ...

LookInMyPC is also a great tool for diagnosing computer issues, especially if you're troubleshooting an unfamiliar computer.

McAfee TechCheck performs a complete scan of your computer and detects the hardware and software problems in your computer.

These seven handy tools help you diagnose and cure a wide range of Windows ills, and they're all free for the downloading.

This makes troubleshooting common Windows problems much faster and easier. For example, you can use the number 21 to launch the Windows Update Repair Tool or use the number 23 to reset Windows.

NetCrunch Tools is a free troubleshooting toolkit which includes basic IP tools, Subnet Calculator, DNS Audit, Ping Scanner, Port Scanner, Network Services Scanner & more.

Basic tips for diagnosing a mysterious Windows freeze, plus a review of Advanced SystemCare Free 5.

PC World blogger Rick Broida tells you how to troubleshoot PC performance, speed up your Internet access, open .docx files, and more.

How to remotely access a computer and fix your family’s IT problems for free Controlling a computer from across the country can be a lot easier than you may think.

Hopefully, you’ll never have a PC problem to troubleshoot, but if and when you do run into problems with a Windows computer, Safe Mode will be one of the most useful tools in your toolkit.