No logon possible after disk replacement

[Langholm]

I replaced the hard disk of a PC running WinXP Pro.
Now I cannot logon, neither on the network nor as administrator on the PC.
After the system accepts and checks the user ID and password, some windows
flash quickly (too quickly to read them, in fact) and then it returns to the
original logon screen at startup.
The original hard disk is a 40GB EIDE, the new one a 80GB SATA.
I had the done the replacement as follows:
1. Installed the new SATA disk.
2. Started up, hardware found, rebooted. All ok.
3. Copied the partition (using partition magic 8.05) from old to new, whilst
maintaining same partition size. All ok.
4. Shut down, removed EIDE, set boot disk to the new one.
.... anyone knows what I did wrong, or how to correct? Many thanks for
letting me know!

 

[Jerry]

Boot from the XP CD and opt to do a repair install. You may have to press F6
and install the SATA drivers.

 

[Langholm]

Well - I forgot to mention this perhaps but I tried that. It's asking for a
Windows automated System Recovery Disk which I don't have.
I'm not too concerned about data loss since the data are all still on my old
disk.
But even if I can make such a backup from the previous disk, I am surprised
about the volume of work and wonder if it does not bring the same result
since it restores files that are there already on the new disk. Basically,
the procedure you propose is a backup to a third medium, a reformatting, and
then a partial installation OS followed by recovery - of the same files?