concern about cmd not working as expected

My wireless network just started playing up, saying it was connected and showing activity, but my web browsers werent connecting to anything, including my routers. I tried used cmd to ping, and ping wasnt even working... this is the readout from cmd.

Microsoft Windows [Version 6.1.7601]Copyright (c) 2009 Microsoft Corporation. All rights reserved.C:UsersHarry>ping 192.168.1.1'ping' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry>net'net' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry>net?'net?' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry>help'help' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry>cmd'cmd' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry>run'run' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry>shutdown -a'shutdown' is not recognized as an internal or external command,operable program or batch file.C:UsersHarry> so after reading about badBIOS, I'm a *little* concerned that cmd is failing. Anyone who is half computer able to shed some light on this?
 
thanks,
phaseform