Updating the video driver should not cause the behavior you are seeing. It
should be the cure.
There is nothing special about a video driver for a machine that runs Vista
basic.
The best drivers are only available from Nvidia and ATI, not the system
manufacturer. If you have paid for a higher end discreet graphics card,
whether desktop or laptop, the only way to get the performance you paid for
is with the latest drivers. Motherboard based GPUs like yours will also
benefit from the latest drivers.
In the many hundreds of laptops/desktops I have been through I have yet to
see a single one that reliably emerges from Microsoft sleep/death regardless
of OS and especially Win 7 and Vista (they are largely one and the same).
As your machine is running Vista basic this suggests an older, low end
machine. The slow down you are experiencing may have more to do with dust
build-up and heat more than anything else. Realize also that according to
Microsoft all problems with its OSes are due to third party vendors.
>> Stay informed about: Drivers are interfering with Windows in and out sleep mode