Error code 0xA00F4244 NoCamerasAreAttached

Remedy/Solution: 
(1.1)     Mentioned by other contributors online and Microsoft Community. 

Explanation: 

I encountered this issue with Laptop Camera (Lenovo S340, AMD Ryzen 5 3500U, 14") for several years, until I saw a post on Microsoft Community, with a solution to root cause on why laptop webcam was not detected. 

Just by using 2 fingers (thumb, and 1st finger), by "pinching" or "pressing" area beside laptop camera, on external side and internal side of screen frame, the problem can be temporary solved (minutes, hours, days, weeks). 

It could be a hardware issue of Laptop camera wiring or electrical contact issue (eg. loose contact). Very often, a laptop user may open the screen on either left side or right side, of screen, this may cause the screen frame to "Warp" (physical bending or twisting of an object). If user were to open laptop screen carefully, by opening laptop screen in the middle of screen, such issue could occur less. Screen frame "Warp" may cause laptop camera to encounter electrical contact issue, resulting in Webcam Not Detected, or Black Screen, etc. 

Troubleshooting Windows software in this case may not solve Webcam Not Detected, Black Screen. 

I had sent my laptop to Lenovo's service centre for 1 or 2 times for above problem, but still not solved even after reinstalling Windows 10 and other software. I heard similar issue for Asus laptop, and had informed a staff at their motherboard service centre on above remedy, during last visit. 


Other Solution: 
Buy a USB Webcam and connect to USB port on laptop, preferably a webcam from reputable brand driver software.