|Wow, fir a second I thought the last line #2 read, "include three legs from ....".|
Sorry but just couldn't resist it.
Back to the serious business. I know it is not easy but can you find a way to try describe this noise any more closely - is it a squeak for instance?
Can you determine whether it is coming from the speakers or inside the case?
I take it the computer is behaving normally in other respects.
Always pop back and let us know the outcome - thanks