Like a doctor visit, the first thing you should do about a new challenge or problem is to investigate what causes the problem. Therefore it will usually be necessary to go through a checklist to find out what is wrong in order to determine what should be done to solve the task. This checklist should follow the Information Technology Infrastructure Library’s (ITIL) approach since it provides a uniform and transparent diagnosis of IT problems. Often a diagnosis will save you time, because it can help identifying misunderstandings or misconception of IT problems that showed up to not exist.