Can you screen record your pc with a camera?

If you have a good mirrorless or dslr can you connect a usb to you computer and record your monitor? Is there already a feature or app installed on windows or your camera that will let you do this or do you have to download one?

I have a 2015 mirrorless Nikon.

Point the camera at the screen. Done.
Or use a Windows recording app to create an image or movie of your screen.

There are lots of screen recording programs but nothing that would use a camera (good or bad) unless Windows was seeing it as an external drive. If for some insane reason you wanted to record directly to the card you'd be better off using a card reader.

Look up whether the camera supports 'Tethering'

If you point the camera at the screen to be recorded and press record, yes.

If you want the camera to "stream" video over USB or HDMI from the computer into the camera, then, no. HDMI is out from the camera only - not in to the camera. USB is generally a data transfer connection, not a video streaming connection.

You don't need to use a camera to record your screen. There are plenty of free apps online that will record your entire screen and audio from your mic. This is a common tool used to make tutorials.

Regardless of the source or what's on your monitor, it's on it, these apps will record it.

Generally No.

Go ahead and try it, but usually a computer screen has a 'flicker' or bands of light flowing up/down the screen when you try to record the screen with a camera.

There are some free screen-recording software you can use.

Here is a YouTube video that discusses this for Windows, he also has a separate video on how to screen capture on a mac.

You need to have an external drive to do the recording!

Your camera will record whatever is in front of its lens when you press the shutter button. That is what cameras do.

As a practical matter there may be "line interference" issues, and you may have to tilt the camera slightly off the horizontal. Some experiments may be needed.