new surface pro 7 aswell, core i3 model.
i think the problem is related due to faulty camera drivers and windows hello.
in my case, the camera gest bugged after hello failes to recognize me, the camera led stays on, an then i cant acces the camera, minutes after, i get blue screen with error code "PFN_LIST_CORRUPTED", or something like that, it gets fixed after a restart,
so no hardware issues i guess.
today ms released a firmware update, ill test and see.
im almos sure its a driver issue.
EDIT: I THINK ITS FIXED, BUT NOT BY THE UPDATE
today i recreated the isue,i found out its related to the windows camera app. ill explain
after hello fails to recognize, if i try to open the camera with the camera app, BSOD appears, what i did is restarting and delteting all of the app data, and the issue got fixed. i did the steps again, and no BSOD