Unhappy [Q] Front Camera not working after CM 11

Hello, few months ago, I've installed a custom ROM on my N7000 and before I do that, the front camera was working just fine, but after I installed CM 11, it stopped working ever since, I then changed ROM to AICP and no avail, then I flashed back to Stock ICS 4.1.2 and also didn't work, what should I do? Is it a hardware defect? Or just about Kernel, ROM, Software stuff? Help will be much appreciated.
Regards.