Erasing a protected imaage on cannon t3 rebel camera

https://youtu.be/EQ9XFSV3Mt4

You may view/download the manual at Canon EOS 1100D Rebel T3 Digital Camera User Manuals Guides

Simply access photo from protect menu and un-check the checkboxes.

Hi. I would need some more info re your problem but for a start, you say the camera turns on but is there enough charge in the battery to operate the auto focus and the shutter/aperture?
If this is ok, is the memory card full? if so move or delete images from it and re-install it ensuring to insert it properly so you don't damage the camera or the card.If this is now ok and the camera does not capture an image check if the auto/manual switch on the lens barrell is set to "manual" if it is, switch it to "auto" and try to capture an image.
Try what I have suggested and be sure to reply whether the outcome is a success of has failed to solve the problem.

Unprotect the photos first. See pages 194-195 of the manual: http://gdlp01.c-wss.com/gds/0/0300004730/02/eosrt3-eos1100d-im2-c-en.pdf

Clean the contacts in the hot shoe with an eraser and try again

i try to write protect my pictures on my camera canon eos rebel t3 after that i cant snap i cant do anything when i press the shutter button then it write cards write protect switch is set to lock please help me

If this is an old card, it may be corrupted. Try a new one. Be sure to format the new one in the camera before using it.

It sounds like the locking switch on the side of the SD card is in the "locked" position. Remove the card from the camera and slide the tiny switch on the card to the unlocked position. That should do it.

If the image has a small icon of a skeleton key along the bottom when viewing it, it means the image has been protected. You have to un-protect the image to erase it. This is done from the Playback Menu (the one with the arrow on the tab). Specific instructions are on page 115 in the manual. (Manual is available here if you don't have it.)