My email was hacked a while back, and someone might have actually got into my pc and seen other stuff there. Long story but I am very suspicious. I have reinstalled Windows recently due to my worries about this. However I did speak to someone purporting to be from Microsoft and someone from Dell to get help. I was as careful as I could be to make sure I was talking to them rather than a hacker. But I am still concerned I got that wrong and there's someone in my pc. I am hearing lots and lots of clicking noises, the fan ramps up for no apparent reason, the screen has started flickering and flashing to black, there are so many services and processes and the pc resources used seem very high. I have no idea how tell if I have a problem or not. Been driving myself slightliy crazy looking at Resource Monitor trying to work out if all that's going on is legitimate. I have changed some settings here and there but I don't understand things like Networks and security stuff that well. I have Kaspersky. I could really do with some help in working out whether I have a problem or not.