Open the function normal start Win7 system, but after the user log in, the prompt "Cannot find Iertutil.dll", then always does not display the desktop, "Alt+ctrl+del" opens the Task manager, certainly did not appear "Explorer.exe" the process, The following small series for everyone to introduce the solution.
1. The simplest way is to copy a copy of the Iertutil.dll from the base friend computer, first into the c:windowssystem32 directory copy iertutil.dll file, copied to a U disk.
2. Then insert the U disk into the faulty computer, press Ctrl+alt+del, run Task Manager. Click: File-New task-browse-My computer.
3. Find U disk letter right button copy Iertutil.dll to C:windowssystem32.
4. Next, open the Task Manager, enter "regsvr32 iertutil.dll" inside the run. Generally this is OK.
5. If the display can not find the DllRegisterServer input point, and then open Task Manager, in the operation of the input "explorer", will show the desktop.
6. Restart the computer if it is still not working.