Unlocking iPhone 4

[bouncypop]

I have an ancient iPhone 4 I have pulled out of a box in my room, and I only just found it again. I have gotten a new computer ever since this phone was given to me, and it is currently disabled, and asking me to connect to iTunes. However when I plug the phone into my computer, the computer is asking for me to trust my iPhone. It sends a prompt to my iPhone, however I cannot get into my iPhone since I do not have the password to the phone. The power button on the phone is broken (sadly) and I was just wondering if any of you people had some advice or tips on what I could do.

[voiha]

A call to apple support will fix your problem, or you can reset the phone manually if there is no valuable info inside that you want to preserve.

[bouncypop]

If I was going to reset the phone manually, how would I do so?