I have a serious Facebook addiction and I really want to get a hold on it. Its really affecting my studies!!!!  I have installed various blockers/extensions on my browsers and Stay Focused is brilliant as I am able to set it up so that I cannot undo the block until the time is up. This is pointless though because I do not know how to block the Facebook App on Windows 8.1!!!! I am constantly un-installing it and reinstalling it and I'm getting sick of it. I am close to formatting my laptop and reinstalling windows 7 but really could do without the hassle. 

I am currently staying with my parents and therefore do not have access/ability/knowledge/permission to mess around with the router or settings that are not on my laptop.

Please, someone tell me how to block it????!!!!!???? 

N.B

I am a 'average' computer user, so if your responses require more than that please break it down simply for me.