BCCode 3B error reappears again

I had an error on BCCode on my PC but could not find an appropriate solution for it. I then formatted my computer and the problem went away only for a while. Now it keeps on reappearing and I am thinking that it must be a hardware issue. My PC has Nvidia GeForce GTX 560, Intel Core i7 k875, 8 GB RAM and Windows 7 64 bit ultimate. What could be the issue? How can I solve it?
