Gotta love the Goldeneye game crashes!! Eeeeeeeeeeeee...
This YouTube clip is similar to my problem. Picture/game freezes and constant tone. Mine is a little higher pitched. The sound is coming through the audio speaker - it is not a sound of the physical Wii unit. This has happened ONLY DURING ONLINE PLAY. I've only played the campaign missions through Dubai and part of Severnaya.
I've looked at other Wii forums that attribute the problem to the GPU (graphics processor?) overheating during intense graphics. Some online posts suggest that the WiiConnect 24 can contribute to physical overheating and cause the GPU problems. I did notice my Wii case was a little warm with the unit "off" so I disabled WC24. This seemed to help for a few weeks but I've had two crashes in the last week.
Has anybody played around with other settings? Does going up to the 480p enhanced-def change the performance of the graphics card? I had my Wii horizontal for a while when this problem started. I went back to vertical with it on the stand. It is kept in a console cabinet and I open the glass door to allow air through when I'm playing. It's not being heated up by other electronics. I periodically feel the case. The side with the power switch toward the back of the unit seems to be the warmest. During the last two crashes it felt a little warm but not as warm as when the WC24 was enabled with the unit off.
I've had this crash about 15 times (online game time 4 days and counting). The crashes never occur when a round is starting. It's always in the middle or right at the end of a match. Lots of explosions/stuff is usually going on. Several have happened right at the point when the game is ending in a victory condition but before the graphics showing who won come up.
This is a nuisance problem which is still better than general internet/lag problems I've had playing other online console games. I don't want to ship my unit back to Nintendo (they swapped out a bad drive under warranty) but if y'all have any advice or similar experiences please share.
UPDATE: The fix (as some note below) is to turn it off using the power button on the console, wait, and turn it back on. I'm looking for preventative steps. I've got WC24 off now.