I am unable to boot from my master HDD (Seagate SATA). I get the message that Windows\System32\Conf\System File is corrupt. Using my OEM Win XP Home Edition SP1 disc I tried to activate R but I get a message that no hard drive is detected. The same thing happens if I try to load Windows option. I removed the HDD and using an external enclosure attached the HDD via USB to a laptop to see if the disc works and it does at it recognises all the Windows folders. I have used another HDD and loaded Windows to get my system running. Can I copy the System32\config\ files from this working version of Windows to the corrupt version. Any help appreciated.