Holding down the shift key while turning a Mac on will boot it into Safe Mode. Here's how to start a Mac in Safe Mode and use it to diagnose issues.

Learn how to boot into Safe Mode on Windows 8 with our easy-to-follow guide. Safe Mode is a diagnostic startup mode that allows you to troubleshoot and fix various issues with your Windows 8 system.

If your Android phone is misbehaving, crashing frequently, freezing, restarting randomly, or lagging significantly, it's likely that a third-party application is the culprit. Even if you are cautious ...