Hi im not sure if im in the right place but i have a problem and hope someone can help me!

I have had my wii chipped for about 3 years possible longer but for some reason everytime i go to play new or old chipped games the whole thing turns black and then does nothing!
The only way i can turn it of is by the wall or pulling the plug out. I have been told by two different people one saying it just needs updating an other saying its ruined and i just need to get new one!
Is this the case do i have to get new one or do i risk paying the 25 to get the software updated?

Many thanks in advance for any help