We have a dedicated Bricked Issues forum so I've moved your thread.
Do you have any idea how old this Wii is? If it's sufficiently old there a chance you could use an infectus modchip to flash boot2 hack to the NAND.
There are a few things to try right now.
Hold reset as you power up to check for Preloader.
Use a GC controller to bring up recovery menu, port 4, hold down Left, Right, Up and Down as you start the Wii. The System Menu text would appear if this works.
Remove the disc and check for dual DVD slot flashes.