No, you do not need any certification. You will need a business license. Go to your local city hall and ask where you can get information on starting a business. Most city halls have kits to help guide you through the process.Some of the materials in the kit may not be useful to you (they typically include information on how to pass inspections for selling food, etc.).For your type of service, you will probably just need the business license.If you repair the computers at your customer s offices, then you don t have your own office and don t need any liability insurance.
Before you open a computer repair shop go work for one and make sure that that is what you want to do. Those guys work really hard and don t make a ton of money. It s a huge investment so be sure that it is the path you want to take before jumping on the road.