Here's the manual the Geek Squad uses to troubleshoot your computer when you bring it to Best Buy.
Most of the stuff is pretty basic, "check for distended capacitors," "check for dust," "Run PC Doctor," "check for viruses and spyware." The manual seems to be from 2004.
As to the concerns raised by the former Geek Squad City insider, there's definitely no section advising employees to use superglue.
The page on solving problems by formatting the hard drive and reinstalling the OS specifically warns that this is a last-resort option. So if employees are committing these computer sins, then they're not doing it by the book.
As an introductory primer on fixing your own computer, it's not bad. Good to give to your clueless parent. After all, why pay some kid working on his GRE $59 to troubleshoot your computer when you can DIY? And for more advanced problems, you may want to either have your computer manufacturer look at it (assuming it's still under warranty), or take it to your local, independent, repair shop. — BEN POPKEN
http://consumerist.com/consumer/best-buy/company-documents-geek-squads-troubleshooting-manual-247847.php