Sound stopped on Pavilion E 400Y

On my HP Elite Pavilion 400Y, the audio quit working. This really looks like a hardware problem. This is a multi-boot system. I use the Win7 Pro installation daily, and that's where I noticed the problem. If it was a software problem, sound should still work in the other installations.. Win7 Pro partition. Device Manager shows only a High Definition Audio Device with manufacturer Microsoft, Location 0, and that it is working properly. Device Manager-Sound Video and Game Conrollers shows only a Digital Audio (HDMI) deivce not plugged in for playback and shows nothing for recording devices. Device Manager-System devices-High Defintion Audio Device shows manufacturer Microsoft Location PCI bus 1, device 0 , function 1, and working properly. MSINFO 32 shows: Name High Definition Audio DeviceManufacturer MicrosoftStatus OKPNP Device ID : HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1002\5&18D1BC4F&0&0001Driver c:\windows\system32\drivers\hdaudio.sys (6.1.7601.17514, 342.00 KB (350,208 bytes), 1/2/2014 11:03 PM)In Control Panel, I have Realtek HD Audio Manager. It does not load. No error is given. Win7 Home Premium PartitionI booted into the rarely used original partition of Win7 Home Premium. By original I do not mean out-of-the-box. It is the well used and fully updated Win7HP that came with the system. Device Manager-Sound Video and Game Conrollers shows only an ATI high Definition Audio Device, Manufacturer ATI, Location O and that it is working properly. Device Manager-Sysem devices-High Defintion Audio Device shows manufacturer Microsoft, Location PCI bus 1, device 0 , function 1, and working properly. MSINFO32 shows:Name ATI High Definition Audio DeviceManufacturer ATI Technologies Inc.Status OKPNP Device ID HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100&REV_1002\5&18D1BC4F&0&0001In Control Panel, I have Realtek HD Audio Manager. It does not load. No error is given.
The factory installed operating system shows software for ATI hardware, not Realtek. Are ATI drivers the same as Realtek drivers or are they generic enough to work? I do not know if the ATI drivers are original or if they appeared during an update. I do know that sound was working on this partition the last time I used it. Now, however, sound does not work in Win7HP, either. XP PartitionI booted into the even more rarely used XP partition. Device Manager-Sound Video and Game Controllers show an AMD High Definition Audio Device and 5 other lines for Codecs, legacy drivers, etc. Are AMD drivers the same as Realtek drivers or are they generic enough to work? My memory is that my XP sound once worked, but maybe I'm wrong. I haven't logged in here for abouat a year,. Certainly I would not have loaded the AMD software unless it was found automatically during installation. . Control Panel sounds and Audio Devices shows the AMD and the other devices. All state they are working properly. Sound does not work in XP, either. Steps TakenI downloaded the original driver from HP. SP46470.exe loads Origianl Realtek software for ALC888S until it gives an error stating "Your system does not meet the minimum requirements for this update. Update has been canceled (9996)." One HP forum entry addressing this message stated it could be because some hardware was not original and specifically mentioned keyboard and mouse. I am using the original keyboard and mouse. It also mentioned outdated Windows Frameworks, and I have the latest on that. I checked the BIOS, and the audio function section was enabled. I checked Realtek's site, and found data sheets but not drivers for ALC888S (the model shown on HP's site for Pavilion E4000y.) I downloaded Realtek software vrsn 2.79 from Major Geeks. It installed OK, but did not solve the problem. In Control Panel, I have Realtek HD Audio Manager. It does not load. No error is given. Ultimate Question?Is my sound chip dead? Should I just go buy a sound card and forget the motherboard sound system? Or are there other steps I should take?

Hi
You have a couple of options as I see it.
Please First check if the speaker icon on the unit is not muted.
Go to device manager and uninstall the driver and restart and unit will install the driver automatically.
Try doing System restore to the date when the unit was working fine.
Try to update the driver from hp.com website.
Last step is to run a recovery on the unit before this please back ups your data.
If still does not work speaker on the unit has gone bad needs to be replaced.
If your notebook is still under warranty, contact HP and arrange to have the speaker replaced.
Let us know how it goes!
"I work for HP."
****Click the (purple thumbs up icon in the lower right corner of a post) to say thanks****
****Please mark Accept As Solution if it solves your problem****
Regards
Manjunath

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Mark Hopkins
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