Shift Keys Not Working at irregular intervals on Keyboard

[Microsoft Windows]

Both my Shift keys are occasionally unresponsive, while all other keys on my keyboard are functioning perfectly. The keyboard is otherwise in good condition. I’ve tried basic troubleshooting steps like restarting the system and checking for sticky keys, but the issue persists.Could this be a hardware problem, or is it possibly a software/driver issue? What steps should I take to diagnose and fix this?

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