A few weeks ago I was having graphics problems also, and was notified by a Win Troubleshooter that I should update my Intel rapid storage drivers.
It even pointed to the Intel page to download from.
Knowing of the caveat to use Manufacturers drivers for compatibility I search the Gateway site, but couldn't find drivers as fresh as the ones offered at the Intel site.
So I took the chance and downloaded the Intel drivers. I clicked on the file, and it started the installation process. Within three minutes the update was finished, and I've been enjoying better graphics ever since.
Although I would also be tempted to update a driver the way you suggest, I never have. It seems the ease of just using the files installer is much easier, and I never remember to use that method.
Then about a month ago I was reading a post from I believe, Corinne, and she suggested not to use that method because it doesn't clean-out the old files properly, and that can cause a conflict with the update, but if Magatame is having difficulty in running the update I would try from there as it should force an install from there. Driver Update Windows 7 - How to Update Drivers in Windows 7 - Device Driver Update
Another method Magatame could use is to use a Admin CMD window, and remove then install the file from there.
Six of one....half dozen of the other.....Meaning, there's more than one way to skin an install.......... Recover Windows 7 from Driver Update Failures - Softpedia