*Fully revised updated edition. first edition was strong seller - over 30,000 sold. *Ties into the booming A+ Certification market. A+ technicians specialize in PC hardware troubleshooting. *Follows success of Pocket Reference Series by Bigelow, which has sold over 70,000 copies. *Handy format - designed for technicians, in a convenient, portable, pocket-sized edition. *Leading author - Bigelow's last three books have sold well over 250,000 copies.