Is my laptop keyboard broken?

I was going inside my laptop, an Inspiron 1525, to disconnect the monitor from it as the hinges were busted and the monitor was trashed basically. I took off the keyboard to pull out some monitor cords and then I accidentally yanked the keyboard to hard and the cord got pulled out. Me and my dad tried putting it back in the connector and then we turned the laptop on with an external monitor, which worked fine, but the keyboard didn't work. Is the keyboard useless, or is there a certain way to reattach it? Please only answer if your answer applies specifically for Inspiron 1525 laptops and you have knowledge of replacing keyboards.