I have an xp/W2k dual boot system which has been working for years. When I boot into w2k, it starts out normally. It hangs for a few seconds (which is not usual) on "Opening a User Session" (I use no password and it usually goes automatically through this part) and then it goes on until it reaches "Recording your parameters". At that point, it starts looping with "Loading your personal parameters" indefinitely.
I loaded a previously saved partition in its location and the same problem occurs. I shifted the partition on the disk in case some sectors were defective. No change.
From XP, I ran a chkdsk /R on the w2k partition. No improvement.
Exactly the same loop occurs when I go into Safe Mode.