How to solve the win7 command prompt can not open the fault

First, modify the registry, for the registry security, it is recommended to back up the registry in advance
1, first open the run dialog box in the start menu, then enter "ldedit", click Make sure to open the registry;

2, and then expand the [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionImage File Execution Options] item;
3, then delete the items that exist below, delete it if it exists, close the registry after deleting it. .
cmd.exe
cmd.com
msconfig.exe
msconfig.com
360safe.exe
avp.com
avp.exe
adam.exe
EGHOST.exe
IceSword.exe
iparmo.exe
kabaload.exe
KRegEx.exe
KvDetect.exe
KVMonXP.kxp
KvXP.kxp
MagicSet .exe
mmsk.exe
NOD32.exe
PFW.exe
PFWLiveUpdate.exe
QQDoctor.exe
Ras.exe
Rav.exe
RavMon.exe
regedit.exe
regedit.com
regedt32.exe
runiep.exe
SREng.EXE
TrojDie.kxp
WoptiClean.exe
Second, or you To disable the function of the command prompt, you can open the local group policy, and then expand the "User Configuration" - "-" administrative template & rdquo; - & ldquo; system & rdquo; option, find and double-click in the right window “ Block access to the command prompt & rdquo; item, select “ not configured & rdquo;