activation box appears

gizito

New Member
i' ve been using windows vista bussiness for sometime now on my laptop. my background then goes black and the activation box appears.i entered the product key on my laptop and it tells me that the key i have entered is invalid.can you please help me with a new product key.
 

My Computer

My Computer

System One

  • Manufacturer/Model
    Dell XPS420
    Memory
    6 gig
    Graphics Card(s)
    ATI Radeon HD3650 256 MB
    Sound Card
    Intergrated 7.1 Channel Audio
    Monitor(s) Displays
    Dell SP2009W 20 inch Flat Panel w Webcam
    Hard Drives
    640 gb
    Cooling
    Fan
    Keyboard
    Dell USB
    Mouse
    Dell USB 4 button optical
    Other Info
    DSL provided by ATT
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