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Home > Forums > Desktop Software > PC Operating Systems > Microsoft: Windows 7 Forum

Lenovo Windows 7 Sound Issue

Read More Threads Like This One

zamy (TechnicalUser)

8 May 12 15:51

I have a new Lenovo T420, the sound was working fine, after running an update it seems to have installed the new Service Pack and upgraded itself to Windows 7 Ultimate, 32 bit. I now have no sound, the driver is present, i removed the driver and reinstalled it rebooted no joy. There are no errors ind evice manager, the driver is there, everything else is fine. No sound at all in Windows or in any application like Skype.
Any ideas? many thanks in advance.

DrB0b (IS/IT--Management)

8 May 12 16:16

"installed the new Service Pack and upgraded itself to Windows 7 Ultimate, 32 bit" What exactly do you mean here? What does the COA sticker on the Lenovo say the OS is supposed to be? Is this a cracked OS? A Windows Update shouldnt change your Version from Home to Ultimate, unless you entered a Ultimate Key on install or hacked it.

Learning - A never ending quest for knowledge usually attained by being thrown in a situation and told to fix it NOW.

goombawaho (MIS)

9 May 12 7:41

Quote:
A Windows Update shouldnt change your Version from Home to Ultimate

Yeah - for sure, unless you did a Windows Anytime Upgrade. If it's a bootleg, nobody's going to help you.

BIOS - sound card OFF?

Mute button on keyboard or volume turned all the way down? Also check in control panel for check boxes in the sound card area.

Maybe you should uninstall the device in DEVMGR and any associated app from PROGRAMS, run CCleaner temp file cleaner then CCleaner registry cleaner until no errors, reboot and then reinstall the driver from the IBM site.

zamy (TechnicalUser)

9 May 12 11:04

It is an original version, I dont get involved with bootlegs. It ran a service pack and i may have inadvertently done the windows anytime upgrade, i wasnt paying attention. Will try the fixes tonight, but am not confident, thank you in any case.

goombawaho (MIS)

9 May 12 12:16

You can't do the anytime upgrade without paying for it, so you couldn't have done that.
http://windows.microsoft.com/en-us/windows7/products/features/windows-anytime-upgrade

What about doing a system restore if the above doesn't work? Try that. Go back to before the day the problem started.

Then when it wants to do updates again, check them out carefully and only approve one at a time.

linney (TechnicalUser)

9 May 12 16:13

If you test with another user is there any difference?

Can you test with another speaker or headphones?

Try the Sound troubleshooter too.
Control Panel\All Control Panel Items\Troubleshooting

micker377 (TechnicalUser)

10 May 12 1:23

Had a similar problem a few years ago with my Acer laptop video (couldn't get full resolution). Acer drivers didn't help - Windows drivers didn't help. Finally had to track down the board manufacturer and get the drivers from them. By the way, they were listed as one version number "less" than the Windows driver!

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