https://drive.google.com/drive/folders/1s_xLLeXyCNRJmyem2vkqLd-g9XnU3DZm?usp=sharing here is the link of pictures and videos to my problems.

To describe it in words, my camera nikon d3500 is going half way click to autofocus but on full click is not taking any picture. Sometimes it shows error that Error. Press shutter release again. Even if this error is not displayed but still my camera is unable to take pictures.

I tried resetting the options but retouch menu is all greyed out, the reset menu in shooting menu is also greyed out. I also tried formatting the memory card and take the battery out for about 8 hours and re-insert it into the camera to reset the settings, but that did not work.

  • \$\begingroup\$ Could be a malfunctioning shutter, or mirror mechanism. Can you use LiveView mode on the camera? \$\endgroup\$
    – xenoid
    Oct 21, 2020 at 12:01
  • 1
    \$\begingroup\$ In the video you link to, you are trying to capture images when the camera is only a few inches away from your computer's screen. The camera cannot focus that closely. Are you able to reliably take images when the camera can achieve focus on the subject (that is, when the subject is at least a couple feet away from the camera)? \$\endgroup\$
    – scottbb
    Oct 21, 2020 at 15:24
  • \$\begingroup\$ @xenoid no I am unable to turn on the live mode, it says can not turn on the live mode please wait. and many other options in the setting shows this option is not available in current setting or current mode of the camera. I tried changing all the settings and modes of the camera but none helped \$\endgroup\$ Oct 21, 2020 at 16:22
  • \$\begingroup\$ @scottbb I tried taking photos of distant objects, bright object, closer object, dark object and still not able to capture photo \$\endgroup\$ Oct 21, 2020 at 16:22
  • 1
    \$\begingroup\$ "I am unable to turn on the live mode" Sort of confirms that something is broken in the mirror or the shutter, because LV require the sensor to be exposed (mirror up and shutter open). \$\endgroup\$
    – xenoid
    Oct 21, 2020 at 16:57