AOL Computer Checkup is one of the most complete diagnostic, optimization, and cleanup tools for Windows—if you really need such a thing. At least it's not expensive ($5 a month).

Is your computer getting slower, or are you imagining it? We'll walk you through the ways to check your computer's speed.

Performance Improvements I tested AOL Computer Checkup's ability to whip a PC back into shape by performing two tests—running the Geekbench system performance tool and measuring boot times ...

Knowing how to check the specifications on your computer is very useful especially if you want to upgrade and or want to know the system requirements for a particular program that you want to ...

Patrick Marshall answers questions about how to find out if you have a pirated version of a Windows operating system and how secure are VPNs.