Can't shift restore to iOS 7.1 in iTunes iPhone 4

Got this log from event viewer.

Faulting application name: iTunes.exe, version: 11.1.1.11, time stamp: 0x524a8521

Faulting module name: iDeviceEx.dll_unloaded, version: 0.0.0.0, time stamp: 0x4cde567f

Exception code: 0xc0000005

Fault offset: 0x06a01a70

Faulting process id: 0x494

Faulting application start time: 0x01cf4b6439a318fc

Faulting application path: C:\Program Files (x86)\iTunes\iTunes.exe

Faulting module path: iDeviceEx.dll

Report Id: 08ca4e9a-b75d-11e3-9881-d67d22a53ab7

iTunes stops working during restore. Help me out.