ThinkPad T430s No Sound Through Headphones or Internal Speakers

My laptop is unable to play sound through both headphones/earphones and its internal speakers.
I downloaded and installed the Realtek High Definition Audio Driver from the following site: http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t43... .
As a result, the Device Manager shows that the HD Audio Device is working properly.
Also, there is a green check mark over the internal speakers icon and headphones icon (when I plug the headphones into the jack), which was not present before I installed the Realtek Driver.
However, there is still an "X" over the audio icon in the taskbar.
When I click on the audio icon, the following window appears, stating that the audio device is disabled.
I have went through various forums and solutions, but none have been helpful so far.
Thank you so much for your time and help for this issue!

The Unknown Device seems to have disappeared from my Device Manager when I restarted my laptop. However, the HD Audio Device is still there.
My audio stopped working around December 23, 2014. Since then, I have tried to find solutions on various other sites. But, when I search for the System Restore, it only brings up a recent Windows Update.
Roll Back for the HD Audio Device is greyed out.
Also, after uninstalling the HD Audio Device and rebooting Windows, this dialog appears, mentioning that the Unidentified Device is something that was unplugged, which I think are the headphones. Also, there was a Failed installation for the Audio Device.
Thanks so much for helping me look into this problem.

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Message was edited by: davidszcz

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"aplay -l":
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 65536
Mono:
Front Left: Playback 51760 [79%] [on]
Front Right: Playback 51760 [79%] [on]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch cswitch-joined
Capture channels: Front Left - Front Right
Limits: Capture 0 - 65536
Front Left: Capture 9620 [15%] [on]
Front Right: Capture 9620 [15%] [on]
Last edited by felixnigh7 (2014-03-11 00:26:17)

Perhaps you have previous configuration files on your system (~/.asoundrc or similar)? You might want to look at you mapping of signal paths/jacks with hdajackretask found in alsa-tools (Frontpanel might be inactive on your particular hardware setup). Double check if correct module model is loaded for your card (line 36).
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Couple of things to check here.
1. Toggle volume buttons on headset
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ThinkPad T430s No Sound Through Headphones or Internal Speakers

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