Sometimes, because of reasons such as computer viruses or malware will cause the system environment variables to change, and even lead to many application errors or fail to start.So, in this case, we must restore our default environment variables settings of windows 7.

However, we do not know what is the default Windows 7 environment variables, and how shall we add the default environment variables to the system settings?

Here is the windows 7 default list of environment variables, just need the environment variables in this list can be added to the system.

Users  variables

TEMP:%USERPROFILE%\AppData\Local\Temp
TMP:%USERPROFILE%\AppData\Local\Temp

System  variables

ComSpec:%SystemRoot%\system32\cmd.exe
DXSDK_DIR:C:\Program Files\Microsoft DirectX SDK (November 2008)\
ERRORLOGPATH:C:\Program Files\TrueSuite\Logging
FP_NO_HOST_CHECK:NO
NLOG_GLOBAL_CONFIG_FILE:C:\Program Files\TrueSuite\TrueSuiteLog.config
NUMBER_OF_PROCESSORS:2
OS:Windows_NT
Path:C:\Program Files\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Windows7Master;E:\Program Files\Windows7Master;C:\Program Files\Common Files\Thunder Network\KanKan\Codecs;C:\Program Files\SinoVoice\jTTS 5.0 Desktop\Bin;E:\Program Files\Java\j2sdk1.5.0\bin;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies\
PATHEXT:.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
PROCESSOR_ARCHITECTURE:x86
PROCESSOR_IDENTIFIER:x86 Family 6 Model 23 Stepping 10, GenuineIntel
PROCESSOR_LEVEL:6
PROCESSOR_REVISION:170a
PSModulePath:%SystemRoot%\system32\WindowsPowerShell\v1.0\Modules\
TEMP:%SystemRoot%\TEMP
TMP:%SystemRoot%\TEMP
USERNAME:SYSTEM
windir:%SystemRoot%

You can click Start,right-click the Computer,and choose the Advanced System Settings,here you can see the environment variables .Then you can change the Windows 7 path environment variables from the list below .



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