The vast majority of that hardware reserved RAM is probably the frame buffer mapping memory window that Windows has allocated so it can access the GPU framebuffer. Unless it's eating up a significant portion of your RAM, you're probably fine. You could try onboard graphics or a discrete GPU (if you have one, try the other).
In the good ole days when you only had 640k-1M of RAM, trying to free up as much as you could made a difference. Now with the norm being 4GB and RAM prices being so low, the tiny amount, in comparison, that the hardware uses is of little consequence.
the question is why? what is the problem you are trying to solve?
I have 4 GB RAM installed, I am running Win7 x64 Home Prem. My Task Mgr/Resource Monitor shows 4 GB installed with 1027 Mb of RAM (1 GB+) held as reserved. Now I'm wondering if it isn't just the limitations of my MOBO's BIOs in this DELL DIM E520 after reading all the responses.