First of all let's start with this (which you have been asked before in several of your other threads),
If unsure what you have grab this,
Speccy - System Information - Free Download
and it should show what hardware you have.
as for your current problem, looking back at your other threads/posts it would appear that you have bigger problems than the video
driver not installing which could be a hardware or software problem.
Is this a clean untouched Windows install, or has it been fed through something like RT Windows 7 Lite (or something similar), or a downloaded version from somewhere?