Hi mojoro ,
The drivers on HP site for Intel HD Graphics 4600 - windows 10 seems a bit outdated.
You can try the latest driver from here: Download Intel® Beta Graphics Driver for Windows® 10 and Windows 7*/8.1* [15.40]
Before you install them you need to disconnect pc from internet (otherwise windows will install an older driver for your video card), uninstall the oldest drivers manually from device manager by selecting "Delete the driver software for this device", then restart windows and let windows install default windows driver.
After that restart again and install the driver, then you can connect back to internet.
This message was posted on behalf of Intel Corporation
Thank you very much to Ronin for providing the information above, I am sure it will be very useful for all the peers that will be viewing this thread.
Just to confirm the information above, in fact the latest driver version for Intel® HD 4600 graphics is: 4474, so, besides trying the steps above, you can also try to install the driver manually:
Any questions, please let me know.