How do I start a Windows XP or Windows Server 2003 machine into Safe Mode with Command Prompt so that I may perform a full virus scan?
How do I start a Windows 7 or Windows Server 2008 computer into Safe Mode with Command Prompt so that I may perform a full virus scan?
Virus scans in Normal and regular "Safe" mode have not been able to remove a detected threat from a machine.
Some infectious threats tie themselves to critical system processes (E.G., Explorer.exe), thus becoming resident in a system's memory. Because of this, virus scans may be ineffective at removing the threat while a machine is started in either normal or regular "safe" mode.
In most instances, a full system scan in safe mode will be sufficient to remove threats. In case it is not, using the Power Eraser functionality of SymHelp is one preferred option.
Starting a computer into the mode Safe Mode with Command Prompt may also prove to be more successful when removing an infectious threat since the explorer.exe process does not run in this mode.
For Symantec Endpoint Protection (SEP):
If there are problems running Symantec Endpoint Protection in this startup mode, or if the suspected threat is not being found, please contact Technical Support for further assistance.
Symantec Endpoint Protection 11.x and earlier.