did u download any new software onto ur computer or maybe ur temperary internet file is full all u have to do is click on tools at the top of ur internet screen go to internet options and click on clear temperary internet files
it may take some time to empty the file so dont worry if it goes slow
if that doesn't work u need go to start menu,accessories,system tools,disk defragmenter
this will take forever if u haven't done it yet so u might want to just start it and go do something else
pm me if u have more questions (i am good at this stuff)
