A customer was having trouble installing autocad on a new windows 7 laptop.

So I try it myself: Uninstall, then reinstall Autocad (so far so good).

I start Autocad from the desktop icon, and I see the EULA again, and once more get asked for the serial number.

Once I enter the serial number, I get the error:

pit.config is not found.

I find the solution by running regedit, and going to:

HKLMSOFTWAREAutodeskAutoCAD 2011 – English

I then change the value of “Eula” from 0 to 1

Once that is done, Autocad work normally.