Reset dlink 614+ router, forgot password

I don't know for the 614 as there isn't a model like that... Your picture shows a DI-514. Here is the process for that model.

To hard-reset the D-Link Plus DI-514 to Factory Default Settings, please do
the following:
• Leave the device powered on, do not disconnect the power
• Press the reset button and hold (use a paper clip)
• Keep the button pressed about 10 seconds
• Release the button
The DI-514 will then automatically reboot itself.

If you truly have a 614, can you post more about the model number? It's usually written on the bottom of the router.