When coming to your home or business, your technician arrives with a hefty inventory of tools and parts to insure that more than 99% of problems can be fixed on site immediately.  Whether you paid $2,000 for a Sony or $700 for a Dell, most Desktop computers use interchangeable parts.  For each part there are 3-5 varieties and we take that into account when inventorying your onsite technician.  Laptops all use proprietary parts so we recommend calling for a telephone diagnosis to assess the cost of repair.