Sound card not detected by Skype

Destrio, here are the answers:
for the 1st (device manager)
I think the answer is
High Definition Audio Device?

I found this in "Sound, video and game controllers"
But is that the right place I should look? I have a doubt,

I’m starting the test with Aida

Hi Rodeur and thanks for your quick reply as well.

Yes, no problem listening to music, but on Skype my interlocutor can't hear me, I can hear them but not the other way around...

When I use the test call proposed by Skype, I get the error message "sound card not detected"

A driver issue?

In my control panel
I go to
Sound
Recording

and there I don’t find a microphone (only Line In which, by the way, is “not connected”)

Thank you Destrio for your reply, I can only do the requested manipulations tonight,
see you soon, have a good day

There is a missing driver.

With the AIDA64 report, I could suggest one.

AIDA64 Extreme Edition ]--------------------------------------------------------------------------------------

AIDA64 Version v2.50.2000/fr
Test module 2.7.421-x32
Website https://www.aida64.com/
Report type Report generator [ TRIAL VERSION ]
Computer PC-DE-ADMIN
Generator admin
Operating system Microsoft Windows Vista Home Premium 6.0.6001 (Vista RTM)
Date 2012-06-18
Time 23:03

--------[ Summary ]------------------------------------------------------------------------------------------------------

Computer:
System type PC with x86 ACPI (Mobile) processor
Operating system Microsoft Windows Vista Home Premium
System service pack [ TRIAL VERSION ]
Internet Explorer 7.0.6001.18000
DirectX DirectX 10.1
System name PC-DE-ADMIN
User name admin
SMTP email address (removed by moderation)
Logon domain [ TRIAL VERSION ]
Date / Time 2012-06-18 / 23:03

Motherboard:
Processor type Mobile DualCore Intel Core 2 Duo T8100, 2100 MHz (10.5 x 200)
Motherboard name Dell Inspiron 1720
Motherboard chipset Intel Crestline-PM PM965
System memory [ TRIAL VERSION ]
DIMM1: Hynix HYMP112S64CP6-Y5 1 GB DDR2-667 DDR2 SDRAM (5-5-5-15 @ 333 MHz) (4-4-4-12 @ 266 MHz) (3-3-3-9 @ 200 MHz)
DIMM3: Hynix HYMP112S64CP6-Y5 [ TRIAL VERSION ]
BIOS type Phoenix (01/14/08)

Monitor:
Video card NVIDIA GeForce 8600M GT (256 MB)
Video card NVIDIA GeForce 8600M GT (256 MB)
3D accelerator nVIDIA GeForce 8600M GT
Monitor Plug-and-Play Generic Monitor [NoDB]

Multimedia:
Audio card SigmaTel STAC9205X @ Intel 82801HBM ICH8M - High Definition Audio Controller [B-0]

Storage:
IDE controller Serial ATA AHCI 1.0 standard controller
IDE Controller Ultra ATA Intel(R) ICH8M - 2850
Ricoh Memory Stick Controller
Ricoh MMC Host Controller
Ricoh xD-Picture Card Controller
Microsoft iSCSI Initiator storage controller
USB DISK 2.0 USB Device (960 MB, USB)
WDC WD1600BEVT-75ZCT0 ATA Device (160 GB, 5400 RPM, SATA-II)
PBDS DVD+-RW DS-8W1P ATA Device
SMART status OK

Partitions:
C: (NTFS) [ TRIAL VERSION ]
D: (NTFS) 10239 MB (5514 MB free)
Total size [ TRIAL VERSION ]

---> Download and install 7-Zip:
https://www.commentcamarche.net/telecharger/utilitaires/2197-7-zip/

---> Right-click the file "R171786", choose "7-Zip" and then "Extract to 'R171786/'". You will obtain a folder named "R171786".

---> Go to Device Manager.

---> Right-click on "High Definition Audio Device" and choose "Update driver".

---> Choose "Search automatically for updated driver software" and click "Next".

---> Click "Browse" and select the "WDM" folder inside the "R171786" folder.

---> Click "Next" and see if the driver installs.

Thank you
I’m stopping here...sorry.
I’m not a good student:

I think I’ve downloaded 7 Zip correctly, but then I don’t see where to go to find the R171786 file ...

I’ve followed everything to the letter... for now it is updating the driver... suspense, suspense... it’s taking quite a long time

Ouaaaaaaaaaaah Super !!...
ça fonctionne !

Un grand merci Destrio.
Ce forum est super, ça fait 2/3 fois que j'ai un soucis et je trouve toujours un internaute sympathique prêt à m'aider .
Bravo et encore merci !

Tu peux juste m'expliquer ce qui se passait ?
Il manquait ce pilote depuis le début ?

What do you mean?
Can you listen to music or what?
If you can, it also happens to me that Skype makes this kind of anomalies, it even happens that it can’t find my microphone or my speakers anymore although they work perfectly (and they work at the moment of the message!).

Install this driver:
http://downloads.dell.com/audio/R171786.exe

I was going to install your driver and I got the "already exists"
do you want to replace it ?

I said yes

Should I continue with the rest of the report or do you have everything you need?

For the report, no need.

Okay Destrio!
So I reinstalled the driver in question, but nothing doing... the problem persists.

This issue of incompatibility with Dell and the sound card for recording—does that not put you on the right track?
I've spent a long time trying to install Audacity, but I could never record myself... as here on Skype, my interlocutor can't hear my voice.

It’s the name of the pilot I had you try, up to you to know where you downloaded it from.

Vista used a generic driver for your sound card, hence the name "High Definition Audio Device."

With the correct driver from Dell (your PC being a Dell), it is recognized properly.

Hello,

In the Device Manager, under what name does the sound card appear?

And do this:

https://www.commentcamarche.net/faq/9265-identifier-son-materiel-avec-aida64

Please post the summary generated by AIDA64 here.