Rescue PC

Force SFC to Run
There is a system repair pending which requires reboot to complete. Restart

get to the repair computer either by F8 or the install cd

login and select command prompt

issue command
diskpart
then list volume
this is to determine the boot volume disk and your system volume

generally c:\ is the boot and d:\ is the system volume

chkdsk /r /f d:

once finished then we need to rename the pending.xml file
d:
cd \windows\winsxs
move pending.xml pending.xml.1

x:

sfc /SCANNOW /OFFBOOTDIR=c:\ /OFFWINDIR=d:\Windows

hopefully this will fix your none booting O/S