Internal Webcam and Microphone not working after Screen Fix

I own a HP Envy Spectre XT Ultrabook, and last week I tried to use the webcam and the microphone for the first time in a few months.
However I was shocked to find that Skype kept saying that the webcam was not detected. The microphone also could not register any sound.
Device Manager did not show any imaging devices or the webcamera, even after setting it to view non-present devices.
A check using msinfo32 did not review the webcamera either, and there were no problem devices.
Control Panel >> Sound showed that the Internal Microphone using IDT High Definition Audio Codec was enabled and working, however it could not detect any sound. All drivers are checked to be up-to-date.
I suspect this has something to do with the screen repair last month which a HP on-site technician came down to replace my screen, although I cannot be 100% sure. Although the screen is now working, the technician did not do a good job reassembling the screen - the bottom left corner of the screen cover has not be able to attach properly to the screen.
I have gone through my BIOS setup to make sure that there is no webcam disabled.
I have tried rolling-back and reinstalling the drivers for the microphone but it did not work.
I have tried uninstalling CyberLink YouCam (laptop preinstalled webcam software).
Please help, these two components are very important to me as I am going overseas soon. The laptop is still under warranty.

Hey ajun,
Thank you very much for the information!
For troubleshooting your Webcam, I would suggest taking a look at the document Webcam Troubleshooting (Windows 7). I would suggest the two options Video does not appear in your webcam software (such as YouCam, Skype, Messenger, ect.), and Webcam is not listed in Device Manager.
For your internal microphone not working either, please take a look at the document Resolving Microphone and Line-in Problems (Windows 7). From this document, I would suggest following the top two symptoms.
Please let me know the outcome of these troubleshooting steps.
Good luck, and have a great day!
I worked on behalf of HP

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Valentin

ValentinT, welcome to the forum.
There are no drivers available for Windows 8. I suggest checking in the Control Panel/Sound/Recording to assure that your microphone is selected. It seems that the Sound is one area that gets changed when updating to Win 8.1. At least, this is what happened to me.
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hey Nambiar,
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WonderWoofy wrote:
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Hello mrsray89. I understand you're unable to get your internal microphone to work.
Did the microphone work as expected when you had Windows Vista installed?
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Click the "Accept as Solution" button if I resolve your issue.

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