No data is cleared by factory reset. I did already say that in the bit about how to factory reset.. but to make you certain.. there is only one way to delete files from the hard disk in a TC.. open airport utility.. go to the disk tab and erase them.. or locate the files in finder and delete them.. ie things you do deliberately. Nothing from pressing physical reset will delete the files.
Plug the TC into the computer.. by ethernet.
Ensure that the PC gets its IP from the TC.. If you don't know Windows you will have to learn where they hide this info. Me.. I still open a command window and type ipconfig /all
The IP address of the TC is what I wrote.. because after a factory reset that is what it will be.
So to gain access to a network drive.. type into the address bar of windows explorer its IP address.. I don't think there is any way I can make it clearer.
\\10.0.1.1
It is much easier if you have airport utility loaded into windows.. I already said that.. have you done it?? If airport utility can find the TC then you should have very little difficulty.
If it doesn't show up.. then the issue is stupid windows firewalls.. if you bought a new windows laptop from any of the big companies.. it will have several lots of security software on it.. waiting for you to pay money to them. These softwares can block your access to the TC. Turn them off at least for a test.
Ensure windows is set to home.. not work or public as location.. and you may even need to turn off the internal windows firewall.
Post again if you are desperate.. but tell me if you can at least ping the TC. You will need to look up how to ping from a PC.
And then go out and buy a USB drive.