I recently added another (320GB) hard drive as the primary slave in my system. I installed it correctly and set it up accordingly. The drive was formatted and partioned correctly. Once I put some files on the drive I restarted my computer and I got a black screen with "Error Loading OS" message. The computer does nothing. How do I fix this? Please don't tell me I have to do a full system restore!!! I am running WinXP Home Edition. This NEEDS to be fixed right away!