No Sound From External Speakers!

[burner00]

]Hi everybody,

I just bought a Acer Travelmate 3260 laptop.. It is core 2 duo 1.83 ghz with realtek onboard sound. It has windowsXP installed. It is working perfectly problem is with the sound. Onboard speakers are working but I want to use external speaker. When I plug in my external speaker sound comes from only onboard speaker. I have also tried my headphone but same problem with headphone also. I have checked sound settings in control panel and also device manager, everything is OK. I have even formatted the hard disk and reinstalled WinXP but still sound comes only from onboard speaker.

Is there any virus in my laptop??????

Please let me know if anybody knows about this issue. Thanks in advance.

[burner00]

Is there anybody out there to solve my problem?..Or is it too hard for your experiences!