Windows7 boot prompts can not find iertutil.dll how to do

1, first right click on the taskbar blank space to select "task manager", (or press Ctrl + Alt + del combination);
2 After launching the task manager, click File -> New Task -> Browse in the upper left corner of the manager, enter C:WINDOWSsystem32 in the create new task, click OK;

3, find and double-click cmd. Exe then enter cd c: windowssystem32dllcache, press Enter;
4, then enter copy iertutil.dll c: windowssystem32 press Enter, then you will be prompted: 1 file copy is good, restart the computer can solve the problem.
Method 2,
1, the simpler method is to copy a copy of iertutil.dll from a friend, first enter the c:windowssystem32 directory to copy the iertutil.dll file, copy to a U disk;
2. Then insert the USB flash drive into your computer and press CTRl+Alt+DEL to run the task manager. Click: File - New Task - Browse - My Computer;
3, find the U disk drive right click copy iertutil.dll to C: windowssystem32;
4, then open the task manager, run inside Enter “regsvr32 iertutil.dll” to restart your computer.