I've been having a problem the last few days and I'm not sure what is causing it or if it is going to happen during me writing this out. Anyway randomly my computer screen will go black (the screen is still on, it is just showing a dark colour) with no error code and doesn't seem to go away until I turn off PC and put it back on. Seeing as I am friends with people who have been proscribed as terrorists by the UK government for thought crimes I have suspected that it is someone trying to monitor my online movements as my friends have also been suffering from the same problem with their PC but this may just be me being paranoid (I have nothing to hide anyway) but what I'm concerned with is if it is a problem with my pc and I can't be sure either way. It looks like when an administrator computer takes control of another pc and the screen goes black. Any suggestions here? It seems to be fine for hours on end and then randomly it starts hitting.