'Interesting' problem on PC Pals

[Simon]

A member on my PC Pals forum has post a rather amusing problem regarding 'sheep' sounds coming from his computer!  We have just about exhausted all of our ideas on this, so I was wondering if anyone here might have a solution, and would be kind enough to have a look, and possible post in the thread?

http://www.pc-pals.com/smf/index.php?topic=29290.0

[Rik]

I've got no ideas on this one as all the obvious things have been tried, so we need your help folks.

[Glenn]

Does it only happen late at night?

[Glenn]

If possible replace all moving parts, fans HDU & DVD's

[talos]

Is he sure it's coming from the speakers?, if so I would favour a virus attack, a jokey one, if not through the speakers then possibly a mechanical problem as Glenn said.
            Is there any chance he could record it and put it up on the site, someone might recognise it

[Glenn]

Can you id it from these? http://www.sheep.com/sheep_sounds.cfm 

[talos]

Can you id it from these? http://www.sheep.com/sheep_sounds.cfm 

That was fred, I'd know that voice anywhere

[Glenn]

I presume that the sound is coming from external speakers connected to the PC, if so, how are the cables routed, could they be picking up rf interference?

I see A-squared has been used to scan the drive, has any other malware scanners been used?

[Simon]

We can only go on what's been posted.  SAS and MalwareBytes were suggested, but he hasn't said if he used them.

[JohnH]

New mail notification .wav file?

[Rik]

Good idea.

[Sebby]

It might also be worth running HijackThis and posting the log, then we can see if there's anything dodgy running.

[Ted]

New mail notification .wav file?

I was thinking along these lines, perhaps "something" has attached a sound to some obscure system event

[Simon]

Cheers, I'll pass the suggestions on.

[cavillas]

It's Riks dinner hiding away.

[Rik]

No chance, it would be going Moo!.