This system is running XP - it was purchased as "Windows 7 downgraded to XP Professional" which is a common Dell option for business systems. This means it comes running XP out of the box. One system is giving us a File:\Boot\BCD, Status: 0xc000000f error when booting. Is there a quick fix for this? We spent time building the machine and don't want to restore it to default (or send it back) if we can avoid it.