This is a practical reference book which uses simple testing methods to confirm if a laptop's failure is software or hardware-related. The testing methods presented here can provide a diagnostic accuracy of ninety-nine percent within minutes. Another highlight of this book is that the reader is able to follow a typical repair shortcut, thereby saving considerable 'swap test' time (i.e. avoiding the trial and error system). For the majority of readers, this book will provide most of the failure status information needed to diagnose and resolve an issue. There are thirteen diagnostic flowcharts at the core of this book which are marked with the percentage (probability) of failed components. By checking the components listed on the diagnosis flowcharts one by one starting with components marked as having a high failure rate then gradually inspecting each component with a lower percentage of failure, most individuals will be able to find a resolution. There are also three hundred classic repair cases and dozens of fault detecting methods with application skills available within these pages. Also adopted here is a unique mode of operation to repair laptops with simple steps in which the reader can refer to the eight articles in the "Analysis and Diagnostic" table to find information matching their particular case. The experience and advice provided within this text will assist you diagnose and repair numerous software and hardware problems, and perhaps aid you on your way to becoming your own laptop repair expert.