Can't get the sound to work on a new system

Bought a second hand machine without OS from a computer shop, had Win7 installed in a different shop, but now can’t get the sound to work. Clicking on the speaker icon runs through windows diagnostic utility, which solved nothing.

Installed absolutely all windows updates. In device manager no icons have any alerts, including all sound-related ones, as you can see.
Used DriverMax to update two drivers, so now all sound-related ones are up to date.
Restarted, still same red X.


Thank you very much,
David

Under general tab:
Type: sound, game and video controller
Manufactured by: Microsoft
Location: location 2 (internal bus hd audio)
Status: working properly

I checked for driver and it said it has the latest one.

Under controller tab just dates, etc.

Last tab (details) has even less, just ‘hd sound device’.

I tried turning it off and restarting, but it didn't do anything.



This user also had no sound, and it was because of power service being off.

No audio devices are installed

I checked, it’s on and automatic.
Mine is a 3GHZ Core Duo desktop, his may have been a laptop.

Thank you,
D

BIOS wording is a bit confusing. It says [enable] after a peripheral, which could mean that it is enableD, or that it's disabled, and by selecting it you can choose and save Enable.

In BIOS under peripherals, everything except Trusted Platform Module had [enable], including Audio, High definition audio codec and High definition front panel audio. I switched the Audio to the [disable] status, which made the other two disappear, and restarted.
No difference. Taskbar volume icon still has the X. So looks like [enable] does mean enabled.
So that's another possible fix that didn't work. Real mystery.

Thank you,
D

Thank you, will take it back to the shop.