Glad you found an HDMI output on your 1080. 🙂 As for display calibration, doing that properly requires both software and hardware. Basically, you attach a calibration "eye" onto your display that also connects to your PC, then the calibration software displays various test patterns so that the "eye" can see them and report how those colors actually appear so that the software can adjust accordingly. You can try adjusting color settings manually either in the display's built-in configuration interface and/or through Windows, but that is unlikely to yield good results. If you don't want to go that route, Dell published this KB article about colored tints on their displays that has some basic suggestions for adjustments that might help.