What should I do if I can't find the device after Ipad2 is connected through the data cable in Windows 7?

1. When the data cable is connected to the PC when the IPAD2 can be booted normally, no matter whether it is denied to the ipad in the PC system, there will be a sound of "drip" when normal, if not "drip" ” the sound, use the adapter test whether it can charge normally, if you can not charge, replace the data line test, if you still can not charge, remove the data line problem, there may be ipad hardware failure, you can consider repairing the apple; if you can charge, on the PC Replace the data cable, USB interface test, if it still can't work, eliminate the ipad hardware failure, consider the win7 operating system problem. 2, under Win7 operating system, no matter whether ipad2 is jailbroken or not, you need to install itunes to provide support under the system, you can first "start">;Run” enter ”services.msc”View”Apple Mobile Device” , “iPod Management" If you have not started, start and set the two services to start automatically; you can also open C:\\Program Files (x86)\\Common Files\\Apple to see if you have the following files: Apple Application Support and Mobile Device Support folder. If you don't recognize the ipad, you can update the itunes version to the latest version to ensure that itunes contains the ipad2 driver. If you can't reinstall the operating system, reinstall the itunes test. 3. If Ipad2 cannot be turned on, you can check whether it is powered on. If the white apple can be tried by the following methods. (1) Download the iPad firmware http://apple.178.com/ios/; (2) The boot will only display a big white Apple's IPAD with a data cable linked to the computer with iTunes installed, this time the display is still the card In the interface of a white apple. (3) Press and hold the home+ On/Off button until the IPAD is blank. Release the On/Off button for about 7 seconds until the Itunes detects the connection and enter the DFU mode. (4) At this point, I will see that iTunes will display an ipad waiting to be restored. (5) Press and hold the keyboard shift and click the iTunes recovery button. A dialog box will appear. In this case, please select the previously downloaded firmware file for recovery. (6) The recovery process takes about 10 minutes.