Hello. First time poster. Thanks in advance for any help. So I was trying to repair a friend's Droid 4 and took the battery out as you are not supposed to do. In doing so I ripped out the ribbon redering the old battery useless for obvious reasons. I purchased a new battery, with the ribbon, and installed it, but am still having issues. I do get more "action" than I did previously in that I get a battery display (showed 5% and then jumped to 100% at first, now showing 100%), but still not powering up. Any suggestions or help? I remember reading somewhere when it first broke about seeing the big question mark (which I did at first although doesn't seem to be displaying that any longer) and having to press something at that point to get it to boot up. Please help. My friend is ready to kill me.