I have a Lenovo flex 5. About a year old. I used the laptop last night and wanted to use it now and it’s showing low battery. So I decide to plug it in to charge. However the charging isn’t constant. Within a span of 2-3 seconds, the laptop goes from “charging” to “not charging” back and forth no matter what I do. I need help. It’s not the charger because I tried my extra one already and the same issue occurs. It’s a non removable battery as well. Please help. I’m on a study abroad trip outside the US and need my laptop to do work. Please please please