EOS Rebel T100 won’t take photos while LCD monitor is on

[asaiifii]

My Canon EOS Rebel T100 won’t take photos with the LCD monitor on. I’ve scrolled through settings and looked everywhere, but I haven’t found a solution. It’ll take a photo with the viewfinder, but if I switch to LCD monitor it just makes the sound of taking a photo, yet doesn’t actually take it. Please help!!

[balwinder_singh]

Try switching the M/A switch on your lens to M and take a picture. If you can take a picture then it's the focus. Unless there's something wrong with the lens, the only time the camera can't focus is that there is not enough light or enough contrast for it to work 
Thanks.

[shadowsports]

Greetings,

I'd also recommend resetting the camera to its default settings while testing.   

[p4pictures]

This sounds like you have the AF method set to Quick mode in the 4th tab of the red shooting menus. 

Wet quick mode is selected and you are using Live View - so the screen on the back shows the image before you capture it. Then half pressing the shutter makes the mirror drop - which sounds like the shutter fires, the live view switches off, the camera focuses and then the mirror lifts up restoring live view. You have to press the shutter button down fully to take the picture. 

The T100 manual explains this on page 152