PC doing random things whenever some keys are pressed

[Windows Server]

I've had this problem for about a month now.This usually happens whenever I'm playing a game. Sometimes when I press WASD (any one of those four keys, not all of them at once), my computer will just suddenly execute random actions. The most common is opening This PC and muting my volume, but there's other stuff my PC has done too.I've seen a similar post before here, but the mentioned fix was pressing Win+Alt, which just didn't work for me.

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