I had purchased a laptop there, and for some reason sprang for the extended warranty. I know, it's a sucker bet, but it actually paid off for me when the sound hardware went bad. Physically moving the laptop could cause the sound to change volume or cut off completely, so it was clearly a hardware problem. Just in case, I had spent a couple hours messing around with settings and surfing Google for solutions.
I finally dropped off the laptop for a motherboard replacement. Two days later a member of the illustrious "Geek Squad" called me and told me that rampant spyware was causing my problem. I decided to skip over the idea of how or why spyware would cause sound volume problems. Instead I just pointed out that I had virus and spyware scanned it right before bringing it in, and in fact had never once had spyware on that machine. But she was not to be shaken in her convictions. What was her reason for this confidence? Why, because the processor was constantly at 100%. So I dusted off my phone tech support skills and walked her through disabling my Seti@Home client. Apparently the "Geek Squad" hadsnever heard of the oldest and possibly most popular distributed computing project. Or even bother to look at Task Manager to see what application was using all the processor time.
I figured that was it, they would finally replace the hardware. But no, two days later another "Geek" called up to explain that they needed to reinstall Windows to fix the problem. He couldn't explain how or why that would help, but he was adamant in his insistence, as only the terminally stumped and/or lazy technician can be. Despite carefully explaining why that couldn't be the case, he refused to be budged. I finally had to go back to the store and explain to pretty much every tech in sight what was actually going on. I finally got one that had half a brain, he agreed to finally send the machine in for repairs, a mere week after I first dropped it off. He even offered to get a broken key on the keyboard fixed at the same time.
Three weeks later I finally got my laptop back. The key was fixed, which was nice. Oh, but the sound? No, they hadn't done anything about that. Yep, great service. I needed by laptop back at the time, so I just dealt with until the next year, when I finally managed to get it repaired two weeks before the warranty expired.
Thanks Best Buy!