Hello and thanks in advance for any assistance you provide.
DV7T-4100 w/Intel i5 M460 processor
Product ID: WW189AV
Windows 7 (64 bit) Home Premium
My laptop has no sound at all - built in speakers, earbuds, not even when connected to my TV using the HDMI port (which is a separate driver).
2 weeks ago all sound was working. I was watching (and listening) youtube videos using my earbuds. I stopped a video and left my laptop unused until the next day. There were no installs or updates applied that I am aware of. The next day I closed Youtube and played words with friends and there was no sound. I restarted the laptop and still no sound.
I have read and worked through many processes and fixes found on this and other forums but have been unable to get sound working. I also attempted to restore my laptop back to prior to this issie but my restore points fail (corrupted).
Drivers: Both drivers are present and state they are working properly - they are current versions
ATI high definition Audio Device Date 5/6/2010 Ver 7.11.0.7706
IDT High Definition Audio Codec Date 6/17/2010 Ver 6.10.6289.0
I have uninstalled (checked delete the driver software for this device) and reinstalled multiple times.
I have uninstalled, shutdown, removed power and battery, held power button for 30 seconds, then repowered and let the drivers reinstall (they automatically installed upon boot I was not able to run the sp50642.exe that I downloaded).
I also used the HP Recovery tool and reinstalled the drivers to factory default
I have run Microsofts problem finder and it reports all is working.
I have verified there are no settings muted or disabled. When I test the speakers from"Sound and Headphones" Properties, I get "Failed to play test tone".
FYI - I have not done an update to the BIOS but I checked and mine is the updated version F.29 but the date is 14 days older then the downloadable SP55299 version.
I appreciate any other troubleshooting assistance you may have to offer. Please let me know any other info I can provide. Thanks