Bon ici je m'essai.

N'existe-t-il pas un Linux qui tient sur un CD et qui lit le NTFS ?

http://www.inside-security.de/insert_en.html

You have to go in Safe Mode. Restart your computer, and press F8 in the old pre-Windows Vista bootloader, or while waiting for the Windows XP logo to show up. (There where a cursor blinks). Select Safe Mode in the list of options that shows up.

Login as Administrator. Go to Start -> My Computer -> Tools -> Folder Options -> View -> Show Hidden Files and Folders -> OK. This is to show some hidden files the installer places in the directory it installs Vista in. These include, but are not limited to "Program Data, Pagefile, Documents and Settings (hidden)."

Select all the folders you wish to delete. Right click, properties. Go to Security Tab (yes to the popup that shows up) and click on Advanced. Go to Owner and select Administrator, make sure "Replace owner on subcontainers and files" is ticked. Wait. Once finished, right click, properties, security and advanced again.

Make sure administrator has full permissions. Check "Replace permission entries on all child objects with entries shown here that apply to child objects." Hit OK. Wait again.

Now, the last step! Go to Advanced again. Go to Administrator and hit "Full Control" under Allow. Make sure "Replace permission entries on all child objects with entries shown here that apply to child objects." OK, and wait.