space problem ;/

hi im try to clear up space on my laptop but i don't know where everything is, i deleted loads of music and have about 10gb now and deleted all my movies but yeah there is still 100gb taken up somewhere idk where....... i unstalled loads of stuff and ran ccleaner but nope... didnt work. is there any way i can find out where stuff is to delete???/

download treesize free http://www.jam-software.com/freeware/index.shtml and run it

its just saying there is like 5000mb in windows foldeR?

Just back stuff up to something and reformat

edit; just reread the thread, id probably reformat since ccleaner didnt make any difference, temp files was my guess.