Here is the problem:
You are trying to take a photo with your Canon DSLR camera. The lighting is a bit dark, so the flash should pop up, but instead of the flash popping up, you just hear a clicking sound until your camera gives your an error (Err 05 The built-in flash could not be raised. Turn the camera off and on again).
Solution:
Your flash is stuck and needs to be cleaned. Use WD-40 (Warning: don't do something stupid. This blog is not to be held accountable for other people's negligence, haste, stupidity, or lack of research).
