How To Access IPhone 4s Without Activation Password

I've had my iPhone4s for nearly three years as a Birthday gift, and have recently been having serious issues since iOS 8 with the speed of my iPhone, so I was recommended by a ton of Apple users to do a full Restore and to update to the newest iOS 8.1.1 using my PC through iTunes. I did this (Which was a pain from the start) then during the startup of the device I was asked for my AppleID and Password? I apparently don't know my AppleID and Password, as according to the linked preview of the email used to lock my device, wasn't my main iTunes email? I don't know it! I know I must of created and used one a year or so ago when first updating to iOS 7, but at this moment in time (And most probably forever)Â ...

I don't know it! What OR how can I can bypass this pointless security measure? Is their any possible way for Apple to do some sort of Blacklist test on my IMEI for them to know it's NOT stolen and in fact my phone for SEVERAL years?