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Hello, this could be the Dell ControlPoint Connection Manager...
1) Click Start
2) Click Control Panel
3) Click Add/Remove Programs
4) Right-Click and UNinstall the Dell ControlPoint
5) Restart Computer
6) Test It
Let me know how that goes. You may re-install this application/software if you think you may need it directly from the dell website.
BEST OF LUCK!GOD BLESS!