So my laptop charger stopped working completely yesterday as it didn't charge anymore and started making the laptop create weird noises so I went and purchased another charger today. Upon testing the charger I can only get it to continuously charge whilst off however when I turn it on it will charge, stop charging, charge, stop charging every second and it's frustrating me. I have an msi ge72 laptop and the new power brick I have is quite small so I'm not sure whether it's getting all the power it needs.