I have an iPad 4 that I just replaced the digitizer in. The lcd worked perfect. I went to turn it on after replacing it and it wouldn't come on so I thought it was dead. I put the ipad on charge and it made a charging noise. But after leaving it on charge a while it still didn't come on. Please help.i have double checked everything to make sure it was hooked up right and it is nothing is wrong with anything. Also the home button isn't working so don't know how to do a hard reset after that and the computer recognizes it but it has a pass code I can't put it.