both shift keys not working

[Yeetus Io]

I have already tried turning sticky keys, filter keys, and the rest, I also tried to uninstall and reinstall the keyboard driver and restart my computer but that didn't work. I tried opening bios and reset but that didn't work to. Also when I press both of my shift keys and m it does this: ym when I press both shift keys and t get this: tv and when I press both shift keys and c it turns my volume up.

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