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Sound Drivers Don't Function After Installing Windows 10


Greetings,
I've recently installed Windows 10 via Microsoft's "Media Creation Tool"[fig. 1] for 64-bit operating systems, selecting the second option to keep only personal files and not apps (thus I'm notable to revert the OS back to 8.1). However, after the instillation, I noticed the sound drivers—or something pertaining to the audio on the laptop stopped functioning.
Even with headphones plugged in, and the obvious built-in speakers/microphone, a red 'x' apears next to the audio icon in the system tray[fig. 2]. When the cursor hovers over the icon, an info box displays the text "No speakers or headphones are plugged in".[fig. 3]


[Fig. 1] Verified Microsoft download of the Media Creation Tool.


[Fig. 2] What the system tray looks like.


[Fig. 3] The hovering text box.

So, I tried viewing the available playback devices with disabled and disconnected audio devices shown.[Fig. 4] Nothing shows up but a device named "Digital Audio (HDMI)"[Fig. 5] And no recording devices show up at all.[Fig. 6]
Next, I attempted to view the devices shown in the Device Manager. Under "Sound, video and game controllers" two items are shown: "High Definition Audio Device" and "IDT High Definition Audio CODEC".[Fig. 7]
I've attempted to update and uninstall/reinstall both of these. Nothing has worked so far.
After this, I've restarted the laptop about two times prior to reinstalling Realtek High Definition Audio Drivers.


[Fig. 4] Playback Devices.


[Fig. 5] What shows up in Playback.


[Fig. 6] What shows up in Recording.


[Fig. 7] Device Manager

Nothing's worked, even restarting the computer alone.
Please, I need some help.

Thanks.

Please

Don't despair, Apollo - help is at hand..

- assuming you have Realtek sound onboard..
you might try going to their site and downloading
the Windows 10 driver they have recently posted there..

Realtek

- assuming you have Realtek sound onboard..
you might try going to their site and downloading
the Windows 10 driver they have recently posted there..

Realtek
I've done this already... twice D;

In which case they may have loaded with default settings..
are you able to access the RealTek interface..?

In which case they may have loaded with default settings..
are you able to access the RealTek interface..?
How do I go about doing so?

if the driver installed correctly, you should be able access the interface
via a right-click on the sound icon (bottom right corner of the desktop)

the RealTek speaker icon should appear as an option..

if the driver installed correctly, you should be able access the interface
via a right-click on the sound icon (bottom right corner of the desktop)

the RealTek speaker icon should appear as an option..
As seen in [Fig. 4], that's all I see when I right-click the icon.

hmm, can you supply full details of the Make and Model No. of your laptop
- a quick review of its specs, might yield a clue..

if you right-click in that box in playback devices,
you should get an option to show disabled devices

Computer Type Laptop
System Manufacturer/Model NumberToshiba
OSWindows 10 (Previously 8.1)
CPUIntel Core i5-4200U @ 1.60GHz
Memory8.00 GB
Graphics CardIntel HD Graphics

The screen is cracked slightly, but the computer works fine.
Toshiba Satellite P55t-A5202 Laptop btw

Sound Drivers Don't Function After Installing Windows 10