I have a Lenovo G70 laptop that used to charge with my power inverter but now won't charge while using it. The laptop charges fine when plugged into an actual outlet but when using the power inverter my laptop doesn't even say anything is plugged in, no "plugged in but not charging message." At first I thought it was the power inverter but all my other devices charge just fine with it. Just to be safe I bought another one that was powerful enough to charge my laptop but it still wont charge. Any help would be much appreciated, thanks.