G45 Express Chipset.
4th Generation Intel® Core™ Processors with Intel® HD Graphics 5000/4600/4400/4200 Were is 4500 series?
Please bear in mind the Intel GMA X4500 HD is not part of any Intel® HD Graphics.
You are currently using an Intel 4 series chipset and the support for Windows 8 or win10 is only available through Microsoft inbox driver.
See here for more information: Graphics Drivers — Supported Operating Systems