Reminder: If you do know what I’m talking about don’t do anything and call an electrician to install grounding for your outlet (electricity kills). If there is grounding, then you might have a faulty power supple chord or one without the grounding prong (or it was removed). Power strips and AVR’s(Automatic Voltage Regulators) need grounding to work properly as well as GFI’s(Ground Fault Interrupters) for them to give optimal protection from shock. Tip: if you have a test light that’s normally used by electricians probe the outer chassis of your PC, if it lights it’s grounded and it can shock you.