keyboard - How can I remap function keys while ensuring that they retain their original functions?

I would like to remap certain keys but ensure that they still retain their original functions with modifiers.

For example, I want to remap F4 to mute, but I want ALT+F4 to still close applications. Is this possible?

I am currently using KeyTweak, but after remapping F4 to mute, even ALT+F4 just mutes volume.

Edit: I'm running a PC with Windows 10 home. I have full admin rights.

EDIT (9 months later):

I have recently purchased a laptop with a rather small keyboard. I don't have home or end keys. I'd like to remap the keyboard in the following manner:

• [ and ] retain their original functions.


• shift + [ or] enter curly brackets as they're supposed to.


• alt + [ or ] work as home and end respectively.

I have been unable to find any solutions on the internet. If the solution is to run some sort of a script in the background, it must not be too resource intensive.