No sound output from Conexant High Definition Audio on Lenovo Thinkpad R61i running Windows 7 64-bit

Hi,

Since you upgraded to Windows 7 did you run the Upgrade Advisor and check with the Compatibility Center?

Windows 7 Upgrade Advisor
http://www.microsoft.com/windows/windows-7/get/upgrade-advisor.aspx

Also check the Compatibility Center
http://www.microsoft.com/windows/compatibility/windows-7/en-us/default.aspx

Check with the System and Device makers for updated drivers and many have special instructions to help
with upgrading to Windows 7. Also check with the Lenovo forums for known issues.

Lenovo Support and downloads
http://www-307.ibm.com/pc/support/site.wss/homeLenovo.do

Lenovo Forums
http://forums.lenovo.com/

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If the system can run Windows 7 and there are drivers for it.

References to Vista also apply to Windows 7.

Control Panel - Device Manager - SOUNDS - look for HD Audio - Mine says RealTek High
Definition Audio (that is an example and yours may have an entirely different name/maker).

Write down description make and model - double click on it - drivers tab - write down version.
Now Click UPdate Drivers which may not do anything as MS is far behind certifying drivers.
Then RIGHT CLICK on it and UNINSTALL - REBOOT - this will rebuild the driver stack.

1st go to system maker's site and look for latest driver Download - SAVE - go to right click on
and RUN AS ADMIN (This is your fallback.) REBOOT after each driver installation.

NOTE : Sound drivers often rollback so check the version after installation and the
reboot to see if the version you installed is there, if not repeat the install - reboot
until it is. It can take several tries depending on how many rollbacks it does.

Then do same for Device Maker's site.

Manually look at manufacturer's sites for drivers - and Device Maker's sites.
http://pcsupport.about.com/od/driverssupport/ht/driverdlmfgr.htm

Installing and updating drivers in Windows 7 (updating drivers manually using the methods above
is preferred to ensure the latest drivers from System maker and Device makers are found)
http://www.sevenforums.com/tutorials/43216-installing-updating-drivers-7-a.html

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Error “the Audio Service Is Not Running” When Opening the Volume Mixer in Vista
http://www.winhelponline.com/blog/error-the-audio-service-is-not-running-when-opening-the-volume-mixer-in-vista/

Also Right Click Speaker near clock - Playback Devices - right click in the box area -
check Show disable and disconnected devices. Highlight speaker and on the lower
Right click Properties check settings for Device Usage enabled and so on. Also do
same for Configure on Lower Left of that box.

In Control Panel you can also look for an Audio Manager along with the Sound Settings.

Problems with sound and audio or no sound - a Mr Fixit
http://support.microsoft.com/gp/no_sound

No sound in Windows
http://windows.microsoft.com/en-us/windows/help/no-sound-in-windows

Tips for fixing common sound problems
http://windowshelp.microsoft.com/Windows/en-US/Help/1e87a3e8-c0e8-49af-980f-9eb6686f42d21033.mspx

Speakers and other audio output devices
http://windowshelp.microsoft.com/Windows/en-US/Help/a43f3a31-6d9f-49d1-be22-e2f47b8b1f2c1033.mspx

How to Enable Hidden Audio Devices in Vista
http://www.vistax64.com/tutorials/143447-audio-device-enable-hidden-devices.html

How to troubleshoot sound problems that you experience after you install a Windows Vista
Service Pack
http://support.microsoft.com/kb/948481

Hope this helps.