I have an iPhone 4, jailbroken, and running iOS 7.1.2. I opened the Cydia app, it appeared to be loading something so I waited. Then the screen turned black. I can still hear sounds such as the charging tone when you plug your iPhone in to your PC and things like that. A few posts have recommended doing some Lock Button and Home Button combo but my lock button is broken and doesn't work.
I can't seem to restore because Find My iPhone is enabled and I need to disable it to be able to restore.
Is there any way I can restore this phone and remove Cydia?