Windows rootsystem32missing or corrupt

[nobuck00756]

(initramfs) can not mountv/dev/loop0 (cdrom/Casper/filesystem.squashfs) on //filesystem.squashfs

[oldos2er]

Ubuntu version? Hardware specs? New installation, existing installation, or booting from a live medium? If live medium did you md5sum (https://help.ubuntu.com/community/HowToMD5SUM) or otherwise check it? The more information you provide about your problem, the more likely you are to receive useful help.