I've been having so far in 5 years 3 laptops and all from toshiba...and the first 2 had nvidia chips in there...first of all..let me tell you something...the manufacturer of the laptop will ralely if even bring out an updated version of the graphic driver..as it goes for your brand it is less likely.
I've been putting modded graphic drivers on my nvidias and now I have an ATI powerhouse machine which runs sh4 in full SETTINGS and 1280x 800 without any stutters.
I give you a good advice.The graphic card you have is not as powerful as you might think...nvidia has screwed people around telling its a dx10 chip and the performance suppose to be outstanding..well thats not true...ATI is coming so much closer and is a lot more power efficient..
Anyway back to topic...
You want some help? So you got vista...let me have a look for you....well...hmm...ok
http://www.laptopvideo2go.com/forum/...p?showforum=94
This site has the latest drivers..check carefully...read which ones are less bug free..usually the latest drivers have the most problems...the older ones less problems cause of fixing.
I would suggest you getting this driver here
http://www.laptopvideo2go.com/forum/...howtopic=19830
On top you see something written : Driver
You download that..
Next to it you see something like : modden INF
You download that...now...you make a folder extract the driver in that, ok?
What you do next is you put the modden INF in that driver folder and overwrite the other file..
This enables you to install ANY driver that comes out for Desktop machines on laptop with a nice performance boost.
Make sure you uninstall the driver, then use
Driver Cleaner Pro after you unistalled and restarted your machine, you can find that on
http://www.guru3d.com
Then install the new driver and make your settings and play the game again.
Make sure with SH4 you got patch 1.3 and 1.4 and if you have the addon you have patch 1.5
It will help you out a lot.
If that all still does not work..i believe your graphic card is faulty or your laptop is overheating.
Thats it for now.
Follow what I said and you shall be fine.
Also do NOT install any Direct X version...Vista has allready dx10,you dont need to install anything else..or you may run into the possibilty that vista will have some serious performance issues...My friend had that..I am running dx10 without having to install any other dx version and my games run smooth and fine..
Give it a Try.
Let us know..
Later