HP all-in-one included HID keyboard not working

[FAB5FREDDIE14]

First of all, I was ambiguous about the board I should have chosen so I chose the most relevant one. 

I've had this all-in-one for more than a year now. No problems whatsoever except the occasional green screens of deaths, from insider builds. I'm not on an insider build at the moment. Yesterday the keyboard was fine and all, and I was comfortably playing Forza Horizon 4 and Minecraft with friends. Today I turned the all-in-one on and realized that the keys were not working. I thought the OEM batteries had finally run out. Nope. BIOS and Diagnostics both recognized the keyboard, and so did Device Manager. however, the device manager showed an exclamation next to HID keyboard. I thought reinstalling the driver would do it, but it said that the installation encountered an error. Further, it said that "Windows could not start this hardware device because its configuration information in the registry was incomplete or damaged. (Code 19)" I have no idea what's happening. the keyboard is a full layout, the original one which came with this all-in-one. the mouse is the same but it does not bug. Help would be much appreciated.

p.s. I tried windows updates, sfc /scannow and device manager uninstall-reinstall. nothing works.

[FAB5FREDDIE14 · Accepted solution]

I can't figure out how to delete this. The problem got fixed after I cleared some registry files, shut it down, killed the power from the system, then changed the USB receiver port to another USB port and rebooted.