Having problems with your HP Pavilion dv4000 Notebook ?

No sound and on/off button is on but not the light

\015 My speakers were working wonderfully for a week or so and now after last night watching a movie with great sound, they simply do not work.\015\012\015\012My sound light is also not working. I'm using a laptop. After the usual windows update last night, my sound simply stopped working.\015

Answers :

Try re-install sound drivers
Repair Help & Product Troubleshooting for HP Pavilion dv4000 Notebook

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