When Martha hands Rick the photo of her in a beauty pageant, the picture is a "landscape" format picture of five women. In the closeup of the photo, it is a "portrait" picture of three women.
A computer, after "a hard drive has been wiped", displays two messages: first a doctored DOS directory listing (an empty directory C:\HDdrive, with 12 GiB space unused), then a BIOS error message ("BOOT DRIVE NOT FOUND, INSERT SYSTEM DISK"). It's not possible to show a hard drive's directory listing, if no operating system is booted.