Hi Garm84,
One way of restoring the system to the factory installed state is by PC restore. Find the link for instruction:
Since you have reinstalled the Operating system manually, make sure the drivers are installed in the order given in the link below:
To download the software which were factory installed, visit ‘My Dell Downloads’. In case you are not registered for My Dell Download, click on the link below and register your system service tag:
http://dell.to/14gN1KU
Revert for further queries.