If your HP Envy laptop has a AMD Processor you MUST DOWNLOAD the APU Driver and not just the discrete driver from here: https://www.amd.com/en/support
But if your HP Envy has an Intel APU then you can download just the AMD Driver for the discrete GPU card. Plus all of your Intel APU and CHIPSET drivers must be the latest version including BIOS.
From what I can see any of the HD66xxM or HD67xxM Series GPU cards all have the same last AMD drivers from 2015 & 2016. Those GPU cards are not supported by AMD with driver updates anymore.
If you can post the exact Make & Model of your HP Envy or better yet the Serial Number I try and located the HP Download page to see exactly which GPUs you have installed.
It is best to use HP's own AMD Drivers to use with your laptop since they are 100% compatible while the AMD generic Laptop drivers will work but not with all the features of your laptop.
You can also download and run GPU-Z to find out what Make & Model GPU cards you have installed.