a different kind of answer:
in my experience ALL of those nvidia integrated cards hardly ever last more than 3 years.
just a thought... maybe its just bad luck i've had while repairing those computers. last one was a gateway from around 2008 i think, extremely slow performance and integrated graphics not working properly.
have you think about upgrading to one of those very cheap mobos with celeron included? would be new and performance will be faster than the one you actually have. later on buy a cheap graphic card.