Essayez a voir si le pc fonctionne encore. Branchez une paire ecouteurs au pc, demarrez le et voyez si recevoir le son de demarrage de Windows.
Google translate:
Try to see if the pc still works. Connect a pair of earphones to the PC, start it and see if you can get the boot sound of Windows.
Yes, look for something like https://www.amazon.com/HD-102-Powered-Splitter-Certified-Support/dp/B005HXFARS
Another option, this time with HDMI and audio out: https://www.amazon.com/gp/product/B07HQHJQK1/ref=ox_sc_act_title_1?smid=AHWCC048SI87U&psc=1
No problem.
You'd need a cable like https://www.amazon.com/AmazonBasics-Digital-Optical-Audio-Toslink/dp/B00NH11H38
You'd connect it to the Optical 1 or Optical 2 port in the digital area.
Hi, There should be an optical audio out port on tv. Can you identify it? https://www.howtogeek.com/241828/what-is-the-optical-audio-port-and-when-should-i-use-it/
Indeed, it seems that there are no audio output ports available on the tv, therefore, no option to connect it to the soundbar. Try contacting LG, see what they say.