Seems like when I upgraded my display driver, every time I wake up my laptop from sleep it does not recognize my TV properly - video is played properly on TV but no audio. Only restarting the laptop fixes the issue (re-inserting the cable doesn't help).
I tried to reinstall the driver, didn't help.
Solved! Go to Solution.
What is the exact system model? What is the current OS installed on the system? Did the issue start after any recent windows updates? What is the exact TV model? What is the HDMI cable version you are using? Have you tried another HDMI cable? Have you tried connecting to another monitor / television?
If the system was working fine earlier, then perform a system restore to restore the machine to an earlier point where it was working fine - http://bit.ly/1JEw2ov
Update the BIOS - http://dell.to/1n3X2po - enter the service tag and download the BIOS, update and restart the machine and check.
Reinstall the video driver from the vendor site. Check for the driver model in device manager -> display adapters. If you are unable to find the link, send me a picture of the display adapters in device manager and I shall provide links from vendor site.
Create a local admin account and check - http://bit.ly/1JoFhcw
Also, please click my DELL-username and write me a private conversation with the service tag and your contact details(Name and Email) for case records.
Let us know if you have any other queries.
I have the Dell Inspiron 13-7599 laptop, with Windows 10 64 bit. I have all updates installed, including Bios.
The problem started after I upgraded my video driver from the dell web site (see link in original post). I don't think this has anything to do with my TV (Sony Bravia, by the way) or HDMI.
I will now try a system restore - will report back if it works.
Ok, system restore did the trick. Also continued to install all the Windows 10 updates, and the laptop still works properly, so it means the video driver update I mentioned is the root cause. It's a real shame no proper QA is put into these drivers - I will not upgrade any driver from your web site anymore.
Thank you for the update.
Rather strange that the driver has caused the issue. The drivers on the support site are tested and then released for the update. For all I could suspect, is that it might have been a OS conflict.
Should you need any info / help, contact us anytime.