We got this issue in one of the Linux PC, by mistake in the config file of SELinux instead of using # for commenting ";" was used. After reboot the PC won't boot with below messages:
/sysroot/etc/selinux/config : 10 : syntex error: ";" unexpected
Boot has failed, sleeping forever.
We can access GRUB command line but Single mode bootup doesnt work. the only way to recover was to use Live CD, go to rescue mode. Give below command in shell: