Make it clearer what areas you cover...even add a map graphic to show regions you cover.
Less text, more bullet points of info.
Make the phone number even more prominent, like in the top banner. Make it look like you really want them to call, call to action.
Perhaps in the client testimonials add where they are based as well to reinforce, what areas you cover and also other companies in the area might know your existing clients. (recommendation)
Get a few more photos in there...smiley people fixing computers
Make your site look like...we are the best in the area and we know what we are doing.
