The Intel(R) Mobile 4 series does not have driver support for Windows 10.
This information is available here: Graphics Drivers — Supported Operating Systems
If you still need assistance with the driver, I recommend waiting for any community member that may help on this matter.
Sorry, Allan, I am not asking if the Intel graphics chipset is supported in Windows 10 but how to modify current drivers to make it work on Windows 10. I understand that, as a for-profit company, Intel would like to stop updating drivers for old hardwares. I really appreciate if anyone can provide an unofficial way to modify previous drivers to make the graphics card work on the Windows 10 system -- even the driver may not be optimized. One method I found online is this one: No Windows 10 Drivers? Here's how to get them working in Windows 10. : Windows10
However, seems it does not work for the Mobile Intel 4 series graphics card after a few trials. Any idea?