My webcam is easily accessed by every software but OBS is showing a grew filter with a crossed out camera

[instrogamer121]

Hi, recently I got OBS on my Windows 10 enterprise laptop (which I use for school), I wanted to use my webcam, but OBS is showing a grey filter with a crossed-out camera, does anyone knows how to fix it, I will have the pictures on what I mean...

P.S. I don't have any keys to turn on or off the Webcam, only for the Microphone, Lower, high and mute the speakers and some more...
EDIT** Also, when I open OBS and it has the Webcam option on, the Webcam light is turned on but still showing nothing and in my settings, I have my Webcam on...

 

[FerretBomb]

The camera-with-strikethrough image is being generated by your camera, not OBS.
If OBS couldn't "talk" to it, OBS would just show a black/blank/gray screen there.

Chances are VERY good that you've selected a resolution and/or framerate combination that isn't supported by your camera hardware/firmware, and rather than just blackscreening it's giving you that error-image. 320x180 at 20fps is very nonstandard after all.
Set the resolution and framerate back to 'default' and see if it gives you an image.

 

[instrogamer121]

Yeah, it is working now, it is still set on its current resolution and fps, I just realised that my webcam thing was off from the Lenovo Vantage.... so that helped... anyways, thanks for helping.