I have a Canon EOS 600D that I believe may be broken or some random setting may have been activated.
Oddly enough, I can take videos with the camera, but when I attempt to take a picture or use auto-focus (basically press the shutter button), nothing happens. However, when I press the video button, it records videos as per normal.
I've tried resetting the settings and no notable change happens. Is there something I'm missing? Or is my camera actually broken?
Edit:
If you have a cable release this will be easy. If not, it's a bit trickier, but still possible.
On the side of your camera you should have a cable release. On more entry-level models, it should be a 2.5mm jack, like this one on my T5
If you have older video out cables from some point-and-shoot cameras or some video accessories, you may find that they used a 2.5mm jack. At least that's where this one came from. The RCA side (or not) isn't terribly important - the size of the stereo plug on the other side is. I believe it's also important to have the three bands vs. two. It should fit into the cable release jack on the side of your camera.
If you have RCA ends like mine, then do it this way. If you have another stereo jack on the other end you'll need a paper clip, a penny, or some other conductive material. You just need to short (i.e. connect) the right two bits. The cable release jack has 3 connections in it - ground, half-press, and full-press. In my case, I have 4 connection points on the RCA sides. Two posts, and two sheaths. That means I can connect post-A to post-B, post-A to sheath-B, sheath-A to post-B, and sheath-A to sheath-B.
One of these things should work for you. Maybe.
If this works, you have something horked up with your shutter button. That seems unlikely to me, but if you have a cable around like this it's the easiest thing to check.
It's possible that some setting got screwed up on your camera. I don't know how, but obviously your camera doesn't currently work. So what I would try, if nothing else seems to work, is removing the batteries. Obviously you know how to remove the main battery, but removing the backup battery is usually a bit trickier. I thought that instructions would be found in the manual, but I couldn't find them. There are some instructions for changing the backup battery, though I'm not sure if your specific model has instructions there. But hopefully it's a similar approach.
By removing the batteries it should reset everything back to the factory settings, so if there is some setting you accidentally horked up, hopefully this will fix it.
Clear Settings->Clear All Camera Settings menu option.
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Most Canon cameras have a switch for video mode built as a rotating ring around the button where you start the video (where it says 'Start/Stop').
You need to rotate that back into 'picture mode'.
