Thanks for that, I will try both...
I have found that Dell are working on Drivers for Windows 10 for this old system... but none are available as yet. So there must be a fair few people with this type of old chipset still.
Not only that, but with so many qualifying for a free upgrade to Windows 10 - I suppose they have not been left with much choice.
Honestly though - Even if your solution works, I think I will be going back to Windows 7 until I get a better PC.... My honest view of Windows 10 is it looks great, and overall is very nice but it hogs memory like a (Excuse my language) B**ch in heat! Its not a good OS at all unless you have a really powerful PC... Jesus! Even older games that have a habit of running too fast that were developed for 98 tend to lag!!! That's never a good sign!
This is how I got OpenGL 2.1 working on Dell Vostro 1015 running Windows 2012 R2 -
0) Disable Windows driver signature enforcement -
launch cmd as Admin enter -
bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING ON
1) Download latest Intel 4500 driver for Windows 7 and unpack
2) Edit /DIRECTORY_WHERE_UNPACKED/Graphics/kit49684.inf -
Go to line line 60 nd change
%Intel% = IntelGfx, NTamd64.5.1, NTamd64.6.0, NTamd64.6.2
%Intel% = IntelGfx, NTamd64.5.1, NTamd64.6
3) Install the driver either using setup.exe or manually; reboot.