There are many things that can affect computers and general system performance. both both Personal and Business machines.
I can advise you on these issues.
I have over 20 years experience and can help on the things that annoy you, things you need fixing and any new equipment you may require.
I also have extensive knowledge with business requirements. Servers, networks and communication reqirements. If you're stuck or need advice I have the knowledge and contacts you may require.