Ok here are some suggestions.
a) Check your CPU temperatures in the bios. Are they below 57c? If so
you probably fine there.
b) The memory should probably be in slot 1. Also I've gotten the post
warning on "memory fail" and my computer is stable and it passes the
memtest86. So don't read too much into that.
c) Make sure you have nothing but the necessities plugged in. Video
card, hard drive, 1 Cd-Rom and if you can boot from the CD for the XP
install (more on that below) leave the floppy out of the equation for
now.
c) If you board is new your bios should be at 1005 and if your using a
single stick on posting it should read something like "memory - single
channel mode" and at this point you should be using a single stick.
1) You say you disabled your SATA drives, does that mean you changed
the jumpers on the board? If not, you should - page 19 in manual 1st
jumper guide.
2) You said you originally had a 200FSB setting. This would imply an
incorrect jumper setting for the FSB. Check the jumper setting (on
the board) on page 21 jumper guide #5 (should be over pins 1&2) for
266FSB or greater.
3) Are you using 6 diskettes to install XP with? Those diskettes can
get corrupted very easily. Redo the diskettes or try them on your
other machine. You should be able to get to diskette 6 main menu then
back out. Better yet is to make Windows XP CD bootable and skip any
installation from the floppy. Link below on how to do this. Booting
from a CD will be less prone to corruption and it's a faster load. Or
maybe you're getting to the main menu? If so are you reformatting?
You might also get Partition Magic and delete all the partitions, but
I'm not sure that necessary at this point.
http://www.tacktech.com/display.cfm?ttid=248
4) make sure your jumpers are set correctly on your hard drive. If
it's a single drive make sure you have jumpers set to Master single
drive settings and its plug into the very end of the ribbon cable.
Same thing for your CD-Rom.
5) Get that memtest86. You download it, follow the directions and it
formats a floppy. You won't be able to see anything on the floppy,
but something's on there. You then boot from it and each pass through
contains 7 tests and it will test the memory and tell you if it gets
errors. This will test your memory (although I suppose it could give
you errors and be the memory controller). It's good to have if you
every overclock your memory anyway. Link below.
http://www.memtest86.com/
6) As a last resort see if you can get your hands on win98 or some OS
and see if you can install it.
7) You might also be able to fresh install XP on that drive on another
computer by getting to the main setup menu, reformatting the drive in
NTFS, let it load the "setup" files and then when it reboots (right
before it goes into the real XP setup/installation screen with the
rotating dots) stop it there and then move it over to the new computer
and boot up from there (with the XP CD in that CD-Rom drive of course)
and no floppy installed. Of course it's just all around better to
install from a CD straight from the computer you're actually
installing to.
You might also try amdforums.com - Asus boards for further imput.