PC Locks up if USB enabled in CMOS

Hi All: I have a very annoying problem trying to get my USB ports to
work. If I enable USB in the BIOS setup the computer locks up after
WIndows (XP) starts. I have tried clearing the CMOS, upgrading the
BIOS, and even tried installing a PCI USB controller card (it too
locks up). I have a K7S5A motherboard rev 1.0. I recently installed
this Mobo after my other K7S5A Pro quit woerking. Everything else
works fine when USB is disabled. Any help is appreciated.

Also, when I upgraded the BIOS I used the most recent upgrade (by
date) even though it was about 200k smaller in size. Should I have
upgraded with another file first?
Thanks
PMD

"PMD" <maxb.TakeThisOut@kc.rr.com> wrote in message
news:a73547e7.0402070817.7e5e5ece@posting.google.com...
 > Hi All: I have a very annoying problem trying to get my USB ports to
 > work. If I enable USB in the BIOS setup the computer locks up after
 > WIndows (XP) starts. I have tried clearing the CMOS, upgrading the
 > BIOS, and even tried installing a PCI USB controller card (it too
 > locks up). I have a K7S5A motherboard rev 1.0. I recently installed
 > this Mobo after my other K7S5A Pro quit woerking. Everything else
 > works fine when USB is disabled. Any help is appreciated.
 >
 > Also, when I upgraded the BIOS I used the most recent upgrade (by
 > date) even though it was about 200k smaller in size. Should I have
 > upgraded with another file first?
 > Thanks
 > PMD

Provided the BIOS flash was done correctly, there should be no problem with
the new BIOS.

Did you reinstall XP after the motherboard change? Or a repair installation,
perhaps?<!-- ~MESSAGE_AFTER~ -->