i have a bunker hill security 4 camera dvr model#67139,i lost the manual,and the password seems to have changed or reset.how do I get a hold of the default password?or is there another way for me to get it going?i can find manuals to other bunker hill camera setups at the harbor freight site(where I bought it)but none for #67139...it is literally stuck on record! I can't stop it ,without a password that isnt the one I set it up with!