In this video we cover Module 4, "Power Supplies and Troubleshooting Computer Problems" from the book "CompTIA A+ Guide to Information Technology Technical Support" by Jean Andrews via VitalSource. In this video we discuss power supplies and issues that arise as well as discuss systematic approaches to troubleshooting computer problems. CompTIA stresses in both A+ and Network+ a systematic approach to troubleshooting both computer and network issues, so do make a note of this area particularly.