Maybe they are hidden files, maybe they are in the recycle bin.
A good way: download a program like Treesize Free from http://www.jam-software.com/freeware/index.shtml (there are other comparable programs, but this is what I use) and go searching.
Hello, I need help to recover about 50 to 70 Gbs of my C: drive free space on the hard drive??. What was happening every day i would see my Free space go down by 10 Gb's a day. So from 7 to 10 days i keeped seeing my free space on C:\ going down. I did not know why so i just happened to open media center and when I did I saw it was recording a TV show. So I really never dug down deep into the media center. all I ever did was to watch current TV show playing right now. So I found all the TV shows recorded and i thought well just delete each show and I would gain my free space back. But all I did was make things worse. I deleted the TV shows but not the right way.!! I then figured out that to re-gain the free space by deleting each tv show right, I had to open each recorded TV show then delete each show. Now all the TV shows are gone but all the recorded TV shows are still on my C:\ drive some place!! So What I need help is where to find all the recorded TV shows on my C:\ drive so i can delete each file so I can get my free space back?? I have looked as much as I could on my vista home premium computer 32 bites, Gateway GM5420, 2 Gb ram, 320 Gb free space ( but now down to 113 Gbs and I should be right at 200Gb free space) & 2 CPU's . If You need more info just ask and I will try to give answer about my vista computer. Please, I hope some one will know where to tell me to look & step by step so i can find the TV show files and delete them all, so i can get my free space back?? Thank you ppl for any and all help.