If your PC is unable to boot back into Windows 7 after installing a loader don't panic, simply do the following.

* Boot up your PC from your Windows 7 install disk
* Select the "Repair your computer" option
* Select to open "Command Prompt"
* Input "bootsect.exe /nt60 SYS /force" (without quotes)
* Restart


*** If it still doesn't work try the command as "bootsect.exe /nt60 all" (without quotes)
*** You can also press the escape key (or R) during the boot process and select "Windows without loader"