Can i revert a photo edited on adobe photoshop?

Once the edited image has been saved, the original image gets over written and there is usually no way to go back to the un-edited version.

If you have the original source file, you can restore it to your hard drive. An example of this would be copying a picture from your digital camera to your hard drive again.

You can also retrieve the original file if you've used Windows Backup or some other backup program to save a copy of selected files.