I doesn't sound good. If priiloader doesn't come up while holding down the reset button when powering up then it isn't installed. The hacks.ini file is used to configure priiloader once you have it installed and doesn't mean that it is installed. Do you have bootmii installed as boot2 with a nand.bin backup? If not, I think you have a nice door stop or maybe a good boat anchor.
Next time follow guides from here. It doens'tm mean much now but darkcorp isn't required to run MH3.