Anyone who uses a computer knows how frustrating it is when things go wrong for no apparent reason or when an incomprehensible "error message" precedes a catastrophic crash. This new, fully updated edition will show you how to troubleshoot methodically and resolve all manner of common problems with hardware devices, Windows (including XP and Vista), the internet and e-mail. It will also tell you how to take preventative measures and recover from disaster, and includes a new section on the advanced file recovery and back-up features in Vista. Aimed at all levels of computer user, this manual also includes a comprehensive checklist of known bugs and problems.