First, the hard truth: Intel officially ended support for the EagleLake series (which includes the G41, G43, G45, Q43, and Q45 Express chipsets) after Windows 7. There is for Windows 10 64-bit. However, that does not mean your machine is doomed to a blurry, laggy existence.
This is an unofficial solution. It may cause instability, blue screens, or failure after Windows Update. Always create a System Restore point before proceeding. intel-r-eaglelake graphics chip driver for windows 10 64 bit
Intel’s last driver version for the 4 Series chipsets was (64-bit), but this was only for Windows 7 / Vista 64-bit . It is not compatible with Windows 10’s WDDM (Windows Display Driver Model) requirements. First, the hard truth: Intel officially ended support
Also, disable automatic driver installation: This is an unofficial solution
Intel officially stopped developing new drivers for this hardware family in 2012.