Using after market iPhone 5 cable with MacBook Pro and then laptop shuts down and won't turn back on

I've owned the aftermarket cable for a year and have used it with my MacBook Pro ever since. Whenever I plug it into my laptop it does warn me that it's using too much power but I ignore this because it's been happening ever since I started using it and have had no problems. 2 hours ago I plug the aftermarket cable into my laptop and then plug my phone into the cable and then my laptop turns off. I tried turning it back on but nothing happened. My laptop was plugged into my wall charger and the usually orange or green light has turned into a very dim flashing orange light. Don't know what to do! I've read on other forums that I need to open up the back of my laptop and do something with the battery but I wouldn't have a clue how to do that. Might go into an apple store and see if they can do something? I don't know! Has anyone solved this problem before and how? I would like to avoid using money to fix it. Yes I know I shouldn't use those aftermarket cables, I've definitely learnt my lesson now