I really hope it works out for you!! I understand what you were doing now, I would have done the same thing. I avoid corporate computer "repair shops" because there just isn't enough accountability.
You can find a good tech guy sometimes through friends or even at your local "Extreme" PC shop. Tell them Best Buy will work on your problem for X amount of dollars and usually they will match or beat that price for the same work.
The Difference?? These guys are fully accountable for everything they do to your computer. They also personally know you and your computer.
I was fortunate enough to find a computer tech guy who gave me his cell number. I can call him until 9pm with questions or problems with my computer, and his store has been around for 15 years, so he's not going anywhere.
Truly....I hope you get everything back in order!!!