Q: My Ipad won't start or restore

OK so i was playing candy crush on my ipad 3gen and suddenly i saw lines on the display and my ipad turned off, i tried the to press the home and sleep button for 15 sec but it did not start. i tried connecting ipad with itunes in (pressing the sleep button for 4 sec then without leaving it pressed the home button then after 10 sec left the sleep button and held the home button for 15 sec) itunes after doing all this recognised an ipad in recovery mode and i pressed the restore option on itunes mean while my ipad screen was completely black and, after extracting and preparing the software it displayed WAITING FOR IPAD for a long time then Error message came up (4005 ) How to fix this