Windows7 system taskbar resource manager can not open how to solve

When opening the resource manager, suddenly prompted: the file does not have a program associated with it to perform the operation. Please install a program, or have installed the program, please create an association in the "Default Program" control panel. There are not a few such situations, so how to solve it?
Operation steps
Right-click on the blank space on the desktop and create a new notebook.

Enter the following code in Notepad:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOTCLSID{20D04FE0-3AEA-1069-A2D8-08002B30309D}shellManage]
@=hex(2):40 ,00,25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,00,74,
00, 25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,6d,00,
79,00,63,00,6f,00,6d,00,70,00,75,00,74,00,2e,00,64,00,6c,00,6c,00,2c,00,2d ,
00,34,00,30,00,30,00,00,00
"MUIVerb"=hex(2):40,00,25,00,73,00,79,00, 73,00,74,00,65,00,6d,00,72,00,6f,00,
6f,00,74,00,25,00,5c,00,73,00,79,00 , 73,00,74,00,65,00,6d,00,33,00,32,00,5c,
00,6d,00,79,00,63,00,6f,00,6d, 00,70,00,75,00,74,00,2e,00,64,00,6c,00,6c,00,
2c,00,2d,00,34,00,30,00,30 ,00,00,00
"SuppressionPolicy"=dword:4000003c
"HasLUAShield"=""
[HKEY_CLASSES_ROOTCLSID{20D04FE0-3AEA-1069-A2D8-08002B30309D}shellManagecommand]
@=hex(2):25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,00,5c,00,73,00,79,00 ,73,
00,74,00,65,00,6d,00,33,0 0,32,00,5c,00,6d,00,6d,00,63,00,2e,00,65,00,78,00,
65,00,20,00,2f,00,73 ,00,20,00,25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,
00,5c,00,73,00, 79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,63,00,6f,00,
6d,00,70,00 ,6d,00,67,00,6d,00,74,00,2e,00,6d,00,73,00,63,00,00,00

Click on the file inside Notepad-- save.

After saving, change the suffix name to the .reg registry format. The prompt box is selected.

Double-click it and import the registry to solve the problem.