How to 'defrag' your computer and improve its speed when it's operating slower than usual

Most modern Windows operating systems will defrag your computer automatically, but you can do it manually if you have Windows ...

What is an optical drive? A guide to how your computer reads CDs, DVDs, and Blu-ray discs

Optical drives let your computer read and interact with discs like CDs, DVDs, and Blu-rays. However, they're quickly becoming ...