My computer has recently come under attack by a hacker who has targeted me, how or why is unknown to me.
Here are the details
I was on a skype call, when my minecraft (yes, we were playing mc) randomly shut itself, suddenly a japanese song started playing on windows media player (entitled tmp408.tmp) and that was when I knew this was something serious. I instantly shut the window, as I was suprised and my camera control window popped up, I didn't realise but the hacker was then able to see my camera, later I took the camera off my pc. After this happened we were laughing about it on a skype call but as we were speaking the hacker was taking photos of me, and after shutting all my windows I opened up notepad and typed 'Who are you, why are you doing this to me?' the hacker first of all held enter but after that turned the ? into a :
After this some very loud sounds (hard to describe but horrible) were playing and the japanese song a few times. After this the hacker started open random files, and towards the end opened up tmp506.jpg which was a snapshot of ME taken just now, as I was wearing the same clothes etc. after this I was scared, and when I said to my microphone 'WHO IS THIS' a random person added me on skype, and after that the same person on a different account added me (same picture and username etc).
I know a hacker has access to my computer, at the moment it's in safe mode but I don't know where to go, what should I do ;-;.