Canon EOS 60D Instruction Manual page 289

The file name's first character is an underscore ("_MG_").
Set the color space to sRGB. If Adobe RGB is set, the first character
will be an underscore (p.110).
The file numbering does not start from 0001.
If you use a card which already has images recorded, the file
numbering might start from the last image in the card (p.106).
The shooting date and time displayed is incorrect.
The correct date and time has not been set (p.30).
No image appears on the TV screen.
Make sure the AV cable or HDMI cable's plug is inserted all the way in
(p.209, 212).
Set the video OUT system (NTSC/PAL) to the same video system as
the TV set (p.212).
Use the AV cable that came with the camera (p.212).
The card reader does not detect the card.
Depending on the card reader and computer OS used, SDXC cards
might not be correctly detected. In such a case, connect your camera
and computer with the provided interface cable, and transfer the
images to your computer using EOS Utility (provided software).
Troubleshooting Guide
289