Just recently I encountered a problem where Windows 10 is unable to combine the keys "ALT GR" with "2", "3" or "4". Thus I am unable to type the "@" sign and have to use "alt+64" combo to type it. I searched online for a solution to this problem and found out that people have been experiencing this issue with Windows 7 and Windows 8, unfortunately the solutions that I found do not work on Windows 10.
I am using a nordic keyboard (Finland) and I have the right language setting enabled (Finnish).
All other key combinations work as normal, so this is not a layout problem either.
I have tested multiple keyboards in different usb sockets with my computer, they are all experiencing the same issue, thus I am sure that there are no hardware problems with my keyboards. All keyboards also work perfectly on another PC device.
I have not installed any software recently, the combinations just stopped working during use with no appearant reason.
I installed Logitech setpoint after the problem occured (previously not installed), this was of no help.
To all of my knowledge, this problem must be caused by the Windows operating system, I am studying in IT and have been working around computers all my life and have never experienced anything like this.
Any help is greatly appreciated, even mental support, my mind is going crazy!