Hello, I have a problem. I have laptop, battery, which is to recharge computer, a peace, which is nessesary to fit into a computer's hole. When I trying to recharge, the battery shows that everything is fine and working perfectly. But computer shows "under alternating voltage" and does not recharging... Only stays at 8% power and nothing else. Who's fault: computer's battery, charge battery, system information, a piece which is nessesary to fit into a computer ar something else? Thank you.