Posted: 22/03/2015 at 18:38
Neil - Thanks for your helpful suggestion, however by the time I saw it, I already had the problem solved. I had already tried method no.1 suggested in that link you posted but it was unsuccessful because the rogue program nipped it the bud on the third step. Method no.2 looks far too complicated. However I discovered a piece of software called Malwarebytes, an unfortunate choice of name in my view, as it sounds as though it's distributing malware instead of combating it as it does, and that did the trick. Incidentally I came across a reference to "Windows Media Centre Virus". As WMC is in fact a legit piece of kit bundled with Windows 7 & 8 by Microsoft it seems as though WMCV has been purposely written to mimic the genuine article whilst taking over all the executable files it can find.
BTW That word "combating", it appears there are differences of opinion on whether or not it should be combatting. I can't find a definitive answer.
While we're discussing language (well I am, it's a favourite subject, especially the quirks of English), consider the meaning of the following two sentences as answers to the question, "Where are you going?":
1. Oh, I'm going anywhere.
2. Oh, I'm not going anywhere.
They look like opposites but what's the difference, if any?