Geek Squad is the tech equivalent of Tier 1 support from your ISP. They're not techs, if they were, they wouldn't be applying for Geek Squad money. Rebuilding a pc means you failed at fixing it, or didn't know how. Clients don't like it when all their stuff 'looks different' and all their software is gone. Same as the Tier 1 support guys are not techs, are hired off the street, and are given an 8½x11 sheet of paper with steps to try.
"Ok, please open up Internet Explorer"
"Dude, I'm already logged into the modem in Firefox"
"Yes, please just open up Internet Explorer"
"Dude, I'm looking at the modem's Home page; I have Services, Settings and Site Map tabs"
"Well, if you'd please just open up Internet Explorer"
Grr. Geek Squads sheet of paper has the following:
1. Pretend to listen patiently.
2. Rebuild computer.
3. Tell client they owe you $90.
PS Also a fan of CCleaner. My favorite free spyware and tracking cookie removal prog is still SuperAntiSpyware.