WWE 2K15 question?

If WWE 2K15 is the only game that fails to load properly, check the bottom of the WWE 2K15 disk for scratches, dust, smudges, and/or fingerprints. If your game is badly scratched, you might need a new disk. If the disk contains smudges, dust, and/or fingerprints, cleaning the bottom of the disk with soft cotton and rubbing alcohol should properly clean the disk. To avoid future smudges, dust, and/or fingerprints, always keep the game in its case, attempt to clean a disk with water or spit, and never touch with the bottom of the disk when handling it. If the problem exists with other games too no matter their condition, it might be a hardware problem. In that case, have an expert examine your game console for further information.

you could buy a cleaning kit to clean the disk