PC restarts while running a code that calls mex functions

My pc restarts when I am running a matlab code that calls mex files. I don't know how to check the mex file because I don't know how to read c++ code; I just used mex functions to speed up my code. The only way I could check the mex file is that sometimes that my pc didn't rebbot the results of the code were the same as of the code using the original functions (not mex). What could cause this problem and what can i do to fix it? Thank you in advance.

[James Tursa]

Impossible to say without seeing the source code, but most likely there is a bug in the mex routine. Though typically this would cause a MATLAB crash, not a PC reboot.