On Windows 10, I often have a problem where the laptop will charge and then stop charging and then charge again with one second intervals. I've updated the firmware to the latest version and the issue persists. I'm not sure if this is caused by the charger, internal hardware, or is a Windows bug.
Anyone else experience this?
I have had this problem in several laptops and phones over the years. It's usually a loose/dirty connection. Try a different cable.
This is not a cable problem. The laptop charges just fine when turned off, but starts oscillating between charging and discharging once Windows boots up.