Well, most of you know what a computer repair store does, but I still get people that call in and ask me. So here is a little of what I do:
Free Onsite Diagnosis. Basically you bring me your computer and I'll let you know within a few minutes what might be wrong with it and quote you a price.
Virus Removal (And I sell Antivirus Programs and install them)
Tune-up (To make your computer faster)
Replace Screens on laptops
I Repair MACS (Parts and Programs)
I do onsite repairs (Basically I will go to your house and set up your wireless network, or wireless printer, or any other type of computer related repair)
Data Recovery
And I sell chargers for most of the major brands (HP, Dell, Toshiba, Compaq) and others.