Q: Backup trouble!

I was recently put on prescription medication for sleep, while on the pills I changed the passcode and now I can't remember it! The biggest problem is the photos and videos I have on it, they are from my first ever trip to New York and the sentimental value of the pictures and videos are worth a lot. The phone was locked and I was out of ideas so I plugged it into the computer and backed it up, then restored the phone. I am hopeful that all of the media is safe and sound on the computer but the issue I face now is accessing the content. The password is encrypted and I have been trying everyday since then to unlock it.

Am I entering the right password? I have tried the actual passcode, the account password, my pc password. Everything and I'm still locked out.

Any help or information that you can give me will be appreciated so so much. Thanks.