Solve : sound output suddenly stopped?

1.	Solve : sound output suddenly stopped?
Answer» My laptop dell inspiron 1520 was connected to the amplifier speaker and the same cable (DUAL connector ) was connected to the cd player , when I want to use the laptop , I use OTHERWISE I use the CD player , suddenly there was a electrical SURGE due to loose electric connection and my audio cable was burn out , and the laptop was laptop was connected to the cable , after this surge my laptop is not giving the SOUND output , I used another USB sound card and still the sound it not coming , I have tried to UPDATE the driver in the device manager , scan for hardware changes , uninstall and then reinstall . no luck Please help me to figure out the problem , I appreciate your help , Have you tried playing the sound just through the laptops speakers?

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