When you click on disk cleanup c drive... i remember a while back you do this to make your computer faster. I haven't done this in a long time. When i click on it, i see its checkmarked only on downloaded program files, temporary internet files and thumbnails. Also recently i went to %temp% and deleted a ton of temporary files. Reason being someone told me to do this as that is possibly related to my laptop being slow. That is fine right? Now on disk cleanup, if i do it, do i check mark everything? I notice that my recycle bin is literally 12gb whereas everything else is much smaller. I do see delivery optimization files to be around 800mb and thumbnails which is already checked to be around 550mb. Do i check mark and delete everything? Thing is i have ton of things in my recycle bin due to deleting those temporary files. But i want to make sure... there is nothing in my temporary files that was sent to recycle bin that could possibly be important right? And is this normal to have 12gb in recycle bin? Again I haven't deleted it in a while.