Yes/No questions:
1) Have you tried
another monitor?
2) Does it
only affect the images you have modified?
3) Does it only affect images that are
stored on your computer?
If you answered YES to question (3): Does your image program
actually save the modifications to the image, (eg. Picassa
doesn't unless you tell it) ?
If you answered NO to question (3): Are you
sure?
4) Have you tried saving the modified image to a
different name?
If you answered YES to question (4): When the change occurred, did you then compare the original image with the modified image using a program,
not your eyes, (eg.
Beyond Compare,
AntiDupl,
XnView, etc)?
5) Have you tried saving the modified image to
another format, (eg. PNG, TIFF), as well as the original format?
If you answered YES to question (5): When the change occurs, does the alternate format image exhibit the same change as the original modified format?
6) Have you tried copying an image you have modified to a flash drive, (then
remove it from the computer)?
If you answered YES to question (6): Did you then plug it into another computer and ensure that the image had been modified?
If you answered YES to question (6): When the change occurs, did the version on the flash drive exhibit the same change?
7) Have you tried making a
large modification to an image, (ie. put "
This is a modified image" across the middle of it) ?
If you answered YES to question (7): When the change occurs, did the large modification also disappear?