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HP Pavilion X2 upgrade to 1709 - no sound
I eventually got my detachable laptop to upgrade to Fall Creator, and was very pleased, then noticed that when I received notifications there was no sound, checked all the usual suspects, volume, system sounds, drivers, etc even plugged a headset in, no sound. Using the HP troubleshooter, its first step was to take me through Windows troubleshooter, through the drivers uninstall, it even had me reset my BIOS. HP have a hardware tester built into the UEFI, and on following the instructions, sounds out of the speakers, indicating a pass, but still no sounds from W10. The last suggestion from HP was to update the BIOS, however knowing the system worked before the upgrade decided against that. I followed the roll-back instruction, and after noting the audio drivers in 1709, found the same drivers in the roll backed version, but the sound was working again - bizarre!