This laptop was sold saying Windows 10. But on power up it loaded Windows 11. When we do Zoom the camera shuts down. I took my laptop home last night, connected to my home Wi-Fi which averages about 280mbps.  I attempted to make a test call through teams, it came on for a second and then completely blacked out.  I tried a Facebook call, and it said no camera found.  I checked device manager and no camera is listed.  I rechecked it this morning after logging in at work, still no camera listed.