Can't get into Win XP after removing hard drive

Hi guys. As you all may recall, I've gotten rid of my old
malfunctioning 80GB Maxtor. This drive was the slave HDD on IDE channel
1. It was partitioned into a 40GB Linux drive (bootable) and 40GB of
FAT (for transferring data between the O/Ses).

After formatting (had to use the Win XP install CD as Windows on its on
can't recognise non FAT/NTFS partitions) and removing it, my Windows XP
on my master HDD on IDE channel 1 does not work anymore. It gets stuck
at the boot-up screen. If I boot in safe mode, it works.

At the moment I am getting into Windows by using a new install on the
same master HDD on IDE channel 1. I would really like to get back into
my previous Windows install...for example I can't access my old
Documents folder and Shared folders.

What is causing this and how do I fix this?

Cheers.