HP Probook 4540s no sound from Headphones or external speakers

Hi everyone,
I bought a HP Probook 4540s-Intel i5-3210 2.50 GHz, 6BG RAM, AMD Radeon HD 7650M 2GB DDR3 and an internal Intel HD Graphics 4000.Currently using Windows 7 Ultimate 32bit.The problem is that I installed the sound drivers from the HP site (IDT High-Definition aoudio CODEC) but the sound is only comming from the laptop speakers.Nothing happens when I plug in headphones or external speakers.Please help me because I have to use at least my headphones at work.

Hi,
Please right click the speaker icon (bottom right corner), select Playback devices and enable the Headphones.
Hope this helps.
BH
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HP Probook 4540s no sound from Headphones or external speakers

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