Okay, first off make sure that your current windows version is the same as the version it came preinstalled with,
Then take this code:
Set WshShell = CreateObject("WScript.Shell")
MsgBox ConvertToKey(WshShell.RegRead("HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductId"))
Function ConvertToKey(Key)
Const KeyOffset = 52
i = 28
Chars = "BCDFGHJKMPQRTVWXY2346789"
Do
Cur = 0
x = 14
Do
Cur = Cur * 256
Cur = Key(x + KeyOffset) + Cur
Key(x + KeyOffset) = (Cur \ 24) And 255
Cur = Cur Mod 24
x = x -1
Loop While x >= 0
i = i -1
KeyOutput = Mid(Chars, Cur + 1, 1) & KeyOutput
If (((29 - i) Mod 6) = 0) And (i <> -1) Then
i = i -1
KeyOutput = "-" & KeyOutput
End If
Loop While i >= 0
ConvertToKey = KeyOutput
End Function
and paste it in a notepad file, then save the file as a .vbs file, and open the file, and try to copy the key, hopefully it should work.
Alternatively, try looking around your laptop (bottom, under the battery, etc.) there should be a sticker with the product code on it.
Or try to look for a program that can retrieve a Windows 7 OEM key (I believe Nirsoft has one) and use that.
I really hope I managed to help you with your problem.