bricked wii - system menu does't load
I'm a newby and tried to softmod my wii 4.3 with this tuturial: http://www.chrislowthian.co.uk/nintendo-wii-4-3-softmod-guide/1522/
I followed every step but, after installing priiloader, my wii went black screen...it does not start system menu...
I am able to start priiloader and bootmii. I can start homebrew channel by making load file, and no other way.
When I check the informations on bootmii, where it should says the system menu version, it says v(null).
I have the NAND backup in my pc.
Can you tell me what to do?
Thank you all in advance.