Computer Hope
Computer Hope: Computer Operating Systems
This site contains general information about operating systems as well as troubleshooting help for a variety of operating systems.
Other
Nea Today: Your Computer Isn't Broken: Quick Tech Fixes for Students
Read and display sixteen solutions for common quick technology fixes.
Goodwill
Gcf Global: Troubleshooting
Some simple things to try when troubleshooting, as well as how to solve common computer problems.
Other
Imperial College London: Basic Troubleshooting Guide
Check out this extensive, but straightforward troubleshooting guide for computers.