Situation is this -

Old computer was running Windows 98 (first edition) with no problems.
Recently replaced OS with Windows 98 Second Edition.
Now computer cannot be shutdown. After clicking to shutdown, I get none
of the normal screens like "windows is shutting down" etc. - All I get
is a blank screen with the blinking cursor in top left corner. The
computer has hung at this point and needs to be switched off at the
power button.
The computer will still restart OK.
The problem appears to be the video driver is incompatible with Windows
98 Second Edition. I worked this out because if I remove the video
driver and replace it with standard VGA driver, the computer will then
shut down normally.
Installing the most current Windows 98 driver (Support from manufacturer
for this video card ended March 2005) does not fix the problem.
I found some patch on Microsoft's website for shutdown problems in
Windows 98 Second Edition
http://www.microsoft.com/windows98/downloads/contents/WURecommended/S_WUFeatured
/Win98SE/Default.asp
This does nothing to change the problem.

The video card is an Nvidia Riva TNT2 M64.
Motherboard is a Lucky Star 6ABX2V - This Taiwan manufacturer abandoned
the motherboard making business some years ago and no longer offers any
support at all for this product, and now deals only with web hosting as
far as I can tell (the site is non-english), so no help with new
motherboard  drivers.
The Award BIOS is updated to the current version.
CPU is 400MHz Pentium II slot 1.
There is 320Mb RAM.

Anyone know how or if this can be fixed?