probably either the charger is broken or the charging plug socket, check your charger to see the output voltage and current and try to find a similar charger (if voltage and current were a bit lower its fine just to test with them but it's better not to even test with higher voltage and current) , if that charger could charge your laptop it means charger is broken , get a new charger , happy ending , if it didn't you need to send your laptop to guarantee