Often drop features as they issue new drivers. Be sure you went to HP.com and installed the newest drivers from HP. If features are still missing, ask HP directly if they cut back in the driver features.
We had to connect our t790 to a Windows 10 machine last week. Now we don't have the option to use custom sizing like we had with Windows 7--the only options we are given are preset/international paper sizing. The colors are also off, even though they have been calibrated to the paper. For example, orange sometimes (but not consistently) comes out as pink.
Do we need to uninstall/reinstall the drivers? Update the firmware, even though that says it's up to date? Any ideas? Thanks!