It's back. After using MalwareBytes I clicked ok in the error box and it went away. About a day later it came back and I just dragged it off screen and ignored it and forgot about it. Yesterday upon turning my laptop on it came back up on the password screen, so no programs running at all it just appeared. Googled it and suggestions came up about it being a problem linking add-ons so went into internet explorer and deleted the add-on file and restarted.
Cue problems my screen blew up, everything went oversized, nothing fitted, went into the resolution settings and it had gone to minimum settings, took it back up to maximum but it is still a little blown out. Then about half an hour later message returns.
The trouble I have is I can google all day but knowing what half the stuff means or even whether it is safe or correct is beyond me. If anyone has anything they could suggest I'd be most thankful.