In Windows XP you can
restore the previous versions of the installed driver, if you update it
with faulty driver. Some time you replaced the any old device driver
with new one, but that new driver create problem to run properly then
you can restore the old version again.
To roll back the previous
version of device driver, right click on "My Computer" and "Manage",
here in left side "Computer Management" dialog box, locate and click
on Device Manger option.

Here locate and highlight
the device driver that you want to roll back then press the "properties"
button. Here select the "driver" tab then click on the "roll back
driver" button.

Now reboot your system to
roll back properly your older version.