Black screen after Nvidia onboard chipset update  

So here's the story.

I've been having a problem with my desktop computer where I can't boot anything other than windows. If I try to boot from DVD/USB/SD Card, "Windows is loading files" will show up, then I get a black screen hanging after that. I can't boot into safe mode or system repair either because the same thing happens.

After browsing around, I figured it could be a graphics problem, so I downloaded the correct driver update for my Nvidia onboard 9200 graphics. The screen went black halfway through.. I figured this would happen but would correct itself once it rebooted. Nope. Straight after the Windows loading screen, I hear the startup sounds but can't see anything. I can't even get into safe mode to roll back the driver because all I get is that dreaded black screen. I can however, put in my actual graphics card to be able to use the computer (which I'm doing right now), but I never like to leave it in permanently as my computer gets hot and makes the area I'm sitting really warm too (I have a low profile case).

Any help here would be appreciated. Thanks in advance people :)

Edit: In case you need it, all my system specs are on my profile under the according tab.

Thanks for the welcome, Maxie!

I've downloaded the driver from Acer. Will installing this overwrite the other driver that caused the problem?

Thanks for your help.

Thanks, Maxie.

This may be common knowledge, but how do I go about uninstalling the current driver? Of course the only one I see in device manager is the graphics card I currently have in, and I can't get into safe mode to check it out.

Thanks.

That's alright.

No worries, just realised I can uninstall the drivers from control panel. Will report back when everything is done.

Thanks for your help.

I have had this same problem wit all 320.xx drivers. I went back to 314.22 and all is fine.