Intel(R) HD Graphics not upgrading in Windows 8.1

I've a

Sony Vaio E Series VPCEB32EN

Intel Core i3-370M Processor 2.40GHz, x64 based processor

Shipped with Windows 7 Home Basic(64-bit)

Hard Disk Drive 500 GB / Memory 2 GB

So, my laptop was shipped with Windows 7 Home Basic (64-bit) but later, I installed Windows 8 Enterprise(32-bit) and subsequently, Windows 8.1 Enterprise(32-bit). And obviously, I lost all the drivers that Sony had installed.  Now, my WebCam doesn't work, but that's part of my problem. What I'm interested is that I wanted to upgrade my Intel(R) HD Graphics* driver, so went to Intel® Download Center and downloaded win32_152822.exe, Version 15.28.22.3517 (Latest).  But when I executed it, it showed that

"Computer does not meet the minimum requirement",

when actually, my PC does.  So, how can I upgrade my driver? 

*as seen in Desktop -> Screen Resolution -> Advanced Settings -> Adapter -> Adapter Type