Ran into this issue last month. Customer's meteor produced drastically wrong sound effects when using any NVRAM in any of the positions. Initially had installed the 2-in-1 NVRAM. Tried it with 2 individual NVRAM as well as 1 stock RAM and 1 NVRAM in both possible combinations. All produced the sound error. Ended up putting the stock RAM and battery holder back in and went back to normal. Have not tried again.
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