camera blank

Since I've uninstalled OBS my webcam does not work. I've managed to make it work again in Photo Boot but in the browser there is still OBS virtual camera and it does not work. What should I do?????

I have a camera that goes through and HDMI input on my computer. The first time I start OBS, the camera in OBS is black. If I close down and restart OBS, it usually comes up just fine, though this morning, I had to restart OBS a couple times. I've attached all the log files from this morning...