GUI mode is not working on my machine after I restarted it and it is throwing error

"GConf Error: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to system crash. see http://projects.gnome.org/gconf for information. (Details -1: Not running with current session)

GConf Error: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to system crash. see http://projects.gnome.org/gconf for information. (Details -1: Not running with current session)

user@95:$ Could not parse arguments: Cannot open display:"

can anybody assist me on this.

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