i have the same problem, my ipad 2 ios 8 update: stuck with apple logo refreshing every 2 minutes or so with the black screen (like the one for boot up or reset) but not turning on or connecting to itunes. plugged it in to the computer for an itunes connect to do a hard reboot and the device shows up in grey (meaning i cannot click on it) for a minute while the ipad cycles with the apple logo. the device showing in itunes then disappears and the whole cycle starts over and over again. yes, please help!
update: ok so another member suggested this and it is working so far, although my data will be lost...it is what it is:
DiavonexFeb 5, 2014 9:46 PM Re: Unable to start my Ipad 2 after upgrading to Ios 7.04 . The screen is stuck with the start up apple logo till full discharge. Please help.
Re: Unable to start my Ipad 2 after upgrading to Ios 7.04 . The screen is stuck with the start up apple logo till full discharge. Please help.in response to Pratik Nayak
FORCE IPAD INTO RECOVERY MODE
1. Turn off iPad
2. Turn on computer and launch iTune (make sure you have the latest version of iTune)
3. Plug USB cable into computer's USB port
4. Hold Home button down and plug the other end of cable into docking port. Do not release button until you see picture of iTune and plug (very important)
5. Release Home button.
ON COMPUTER
6. iTune has detected iPad in recovery mode. You must restore this iPad before it can be used with iTune.
7. Select "Restore iPad"...
Note: Data will be lost