New Dell netbook Ubuntu,Debian,login problems-part 2.

[luis_a_maceira@yahoo.com]

Thanks to all who promptly have responded to my first question.Now I have a
more effective knowledge about some of the differences between the two worlds
in terms of power accounts,but I now see that my problem is:
I do not know what is my Ubuntu user password,it do not come with the netbook
package(I purchased the netbook with a great discount price possibly from a
returned buy from another person,I do not see any card or so with login
information).When I turn on the netbook I get automatically into the d1ell
account of which I do not know the password.Anyway,this user name d1ell seems
pretty standard to me,so are there probably any standard password?I tried
dell but it do not work.Have anyone experienced something similar buying a
new laptop?