you have been given some advice already, like restore trucha in ios36.
also to have a look on your wii serial and check which chip is on your dvd drive
have you done anything of that?
also that doesnt sound like you finished the guide without errors, maybe you want to try again on the modding part, that where you install 42 wads to your wii. (leave darkcorp installation out).
you should have the freeze error with syscheck when you installed the wads without error.
you have a very high chance you wii can't play any burned/backup discs -> go buy a harddrive and do usbloading