Hello, so I am having a problem with my Lenovo charger. It won't charge my computer at all! When I plug it in, the battery icon flashes. I have tried many other outlets to check if it was a problem with my outlet, but It's definitely not. My sister has the same charger and I tried it on mine and it worked perfectly fine, so it's not a problem with my battery. I still have the 1 year warranty on it, so am I able to get a new charger? I need to have one of my own that works!! Please help!!