When was the last time you performed some maintenance on your machine? Computers just like human beings need regular maintenance to help keep them working in optimum fashion. Over time, continued usage will slow your computer down until it becomes usable. PC Health Checks every 6 months or so can help to optimise your system and reduce or even prevent problems occurring later.
You can use this service If your computer is running slowly or erratically. You can also use this service if you'd like to confirm your PC is running in an optimal fashion.