Sometimes a customer will ask me to look at a computer that doesn’t start up any more. Quite often, when attempting to fix the problem, I’ll try to roll back the state of the computer to a time when it worked, only to find that no ‘system restore’ points have ever been created. For some strange reason, many modern computers seem to come with System Protection switched off. This means that no ‘system restore’ points get created automatically, either from time to time or when critical changes are made. As a result, every significant change to the system becomes an unnecessary risk, as there is no simple way of undoing it if anything goes wrong. It’s therefore always a good idea to check if System Protection is switched off, and if that’s the case, switch it on. The procedure for doing this is very simple.