This is how you restore an Acer easyStore H340 Windows Home Server:
1. Insert the Server Recovery Disc into any PC connected to the network where the Home Server is connected.
2. Turn off the server.
3. Take a paper clip and press it into the pinhole at the back right on the server while you turn it on. Keep the paper clipped pressed until you see a red light flashing.
4. Wait until the network icon on the server is flashing blue.
5. Follow the wizard from 1) to either reinstall Windows Home Server and preserve the data or to do a factory reset.