Presario C700 no audio or mic why?

so i have a compaq c700 and one day the sound stop working and i tried to fix it but every time i tried to open the audio thing it keep telling this: 
SmAudio could not find Conexant audio divace, application cannot run properly
i tried to download and reinstall smartaudio and it keep telling the same thing! 
can someone help me? 
thanks!

Hello JDWright85.  I understand that you're having some problems with your microphone and audio.
I do not want to come right out and say it is a hardware issue but that is what it sounds like.  I do have a few ideas before looking into a repair.  First, try a hard reset.  This forces the hardware to be reinitialized and can solve a wide variety of issues.
Shut down the notebook.
Remove battery and AC power.
Press and hold the power button for 15-20 seconds three times.
Replace battery and AC power.
Boot notebook and verify whether the issue was resolved.
I will await your reply.  I hope you have a great day!
Please click the white star under my name to give me Kudos as a way to say "Thanks!"
Click the "Accept as Solution" button if I resolve your issue.

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