I use Windows 10 and my MT4 indicators work OK... You might be having the problem if you've got more than one MT4 installation and your indicators are getting mixed up somehow? Might be worth deleting all instances of MT4 on your computer and trying ...
In my opinion, Martingale is an easy way to lose your money. Chasing your losses is never a smart thing to do. And it's even worse if you have no self-control or discipline. It's better to just accept that you'll make some losses but you won't ...