As you know, your graphics chips are considered Legacy...so you have the same drivers available as when you were using Win8.1. There will be no new drivers. This last round of Win10 updates seems to have borked these drivers, as there are dozens of posts and questions just like yours. However, some have rolled back to the previous version of Win10 and got their laptops working.
You should use the drivers furnished by Asus for Win10.
The specified item was not found.