My PC case gives me a mild tingle when I touch it after shutting the computer down, but not while it's running. What could cause that?
Why does my PC case tingle when it's powered off?
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unlisted+but_ready
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A missing or faulty ground is one possibility. The PC can still be connected to mains power when it's shut down, so the fact that it only happens while off doesn't rule out an electrical fault.
Stop using it and unplug it for now. Have a qualified electrician check the outlet and grounding, and have the power cable and power supply checked for damage. Don't try to add your own ground rod or connect a wire to plumbing.
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Does it happen every time you touch the case, or just once after walking over to it? A one-off zap could be static electricity rather than a continuous tingle from the PC. Repeated tingling deserves an electrical check, even if it doesn't hurt.
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