Phone [Q] Factory reset without power button and USB debugging

I have an old HTC Evo Design 4G I found with a broken power button, but I am able to get it to power on by connecting the charger when it times out. The problem is however, my brother forgot the passcode with airplane mode on, so I am unable to use his google account since it can't authenticate it. USB debugging is more than likely off, as he isn't the type to even turn that setting on and I am unable to get pass the lockscreen. Is there anyway I can factory reset this phone with the situation I am in?