How to disable a specific key on my laptop?

I know this question is asked frequently, and I've looked into some of the answers. I tried downloading Keytweak, but the key I have wasn't on its keyboard map. It's a social network key on the top right corner of the keyboard. Every time I hit it two annoying windows show up about facebook, youtube and stuff like that. I can't stand social networks, so this key is more than useless; it's an actual hindrance when I accidentally press it. Can someone advise how to fix this problem?

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).