I started up my computer this morning and because I've recently had problems I decided to make a system restore point as everything was working fine. Since then I tried to view a programme with BBCiPlayer and have discovered that my DRM has failed so I have no licence. I tried to do a system restore but received the message that my system could not be restored, though it's only two hours or so since I made a restore point. I tried to do it for a day earlier but received the same message. Is there any solution to this apparent anomoly, i.e. making a restore point and then it not being possible to use it?