For some reason the time (and occasionaly date) are changing themselves. They've never gone forward, just back. Virus scans haven't highlighted anything. Unchecking the 'Automatically synchronise with an Internet time server' option made no difference. Any idea what might be causing this and a solution?
Sorry don't know how to check it,But it is on the motherboard looks like a very large watch battery,Normally about £2 to buy a new one.Better getting further advice before you try re-newing as it may affect your BIOS settings.