Question: I'd like to disable `ctrl`+`alt`+arrow keys changing the screen orientation. I've seen [here](https://superuser.com/questions/279756/how-to-disable-the-screen-orientation-hotkeys-in-windows-xp) that this is a function of the Intel graphics driver. So I followed the directions and `disabled hotkeys` in the `Intel graphics card control panel`, but the hotkeys are still `enabled`. Might there be some other program controlling this? I'm running a Lenovo T420.

Answer: 
Another option is to disable the `Intel(R) HD Graphics Control Panel Service` altogether. Or don't have it be started automatically.

See more info [here](https://communities.intel.com/thread/51399?start=15&tstart=0).
This following powershell command worked for me:

```
reg add "HKEY_CURRENT_USER\Software\INTEL\DISPLAY\IGFXCUI\HotKeys" /v "Enable" /t REG_DWORD /d 0 /f `

```