AOL Computer Cleanup does a solid job of boosting the performance of worn PCs, but its license limitations makes it hard to recommend in multi-PC households. Satisfactory tune-up results. Easy to use.

If you're a hardware geek who absolutely must know every bit of information about your PC and attached hardware, including performance statistics, then Dr. Hardware ($30, 30-day free demo/trial with ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Even the most powerful computers don’t last forever—otherwise we ...