Respectfully, my PC has lost the Cameras option in Device Manager, as, the PC can not detect webcam, I carried out all the instruction found in internet, including Microsoft advisors, but , the problem still exists: I bought a new webcam, but it did not help, neither I succeeded to find any webcam driver in HP website, the following link:
https://support.hp.com/gb-en/drivers/selfservice/hp-compaq-8000-elite-small-form-factor-pc/4065894/model/4065897?sku=AU247AV
I also installed the last version of window 10, version 2004, but the problem still exists, now, I can not use any software like Skype..... to communicate friends regarding I do not have any webcam due to lack of webcam driver, please how I am able to fix the mentioned above problem, thanking you