How to turn off Shortcut keys on Razer Keyboard?

That sounds like FN+Y activated On-The-Fly macro recording. If you don't use macros, remove the macro module from Synapse - they shouldn't run then. Search for "Apps & features" in the Windows search box then click on it. Click on "Razer Synapse", choose: "Modify" Click: Modify Uncheck: Macro and click: Update in the bottom-right Or, if you enter Synapse, choose your keyboard, click: Standard in the middle to display Hypershift, click the three bar menu in the upper-left to expand the key mappings, choose a highlighted Hypershift key from the left menu (or click the key on the keyboard image), choose: disable from the shown options, and finally click: Save.

Mancubis
That sounds like FN+Y activated On-The-Fly macro recording. If you don't use macros, remove the macro module from Synapse - they shouldn't run then. Search for "Apps & features" in the Windows search box then click on it. Click on "Razer Synapse", choose: "Modify" Click: Modify Uncheck: Macro and click: Update in the bottom-right

I use macros on my Mouse.

Mancubis
Or, if you enter Synapse, choose your keyboard, click: Standard in the middle to display Hypershift, click the three bar menu in the upper-left to expand the key mappings, choose a highlighted Hypershift key from the left menu (or click the key on the keyboard image), choose: disable from the shown options, and finally click: Save.

This doesn't work because when hovering over the [y] key in Hyper shift it says: "This key cannot be remapped". So a conclusion is to sell that keyboard because it's trash. Big congrats to the "engineer" who thought creating such a shortcut would be a good idea.