I remember it happened to me once, might sound wird that the fix for me was plugging any other random keyboard, typing with it, and then unplugging it, after that, the keypad on my laptop was working just fine, good luck
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Random internal screen (desktop usage) flickerings (0.1sec, very fast almost unnoticeable)... looks like AMD iGPU is trying to change resolution or something... ??This also happens to my laptop for some reason, Ive had it for 3 months and still haven...