hi all,
I have a Raspberry Pi 3B and a Raspberry Pi 0 W.
I have installed Raspian via NOOBs onto both devices SD drives (genuine Raspberry 16GB and generic 8GB) .
I have enabled the Camera and SSH in the GUI device config on both devices, and reset.
On booting up I can connect to both devices via SSH from Putty on my PC.
I have reset the ‘user: pi’ password to something else for SSH access. The password is saved successfully and I can run commands at the command prompt from Putty connection.
After ‘sudo shutdown’ and repowering the devices, the SSH access works for the RPi 3B but the RPi0W says the password is incorrect.
I can still access the RPi0W via HDMI and USB keyboard setup but not ‘headless’ via SSH
I have followed the “https://core-electronics.com.au/tutorials/raspberry-pi-zerow-headless-wifi-setup.html” too, on reboot putty finds it ok, accepts the user ‘pi’ but not the default password or the ‘new’ password
I have googled for answers but haven’t found a solution, any ideas?
Hi Damian,
That’s a great question, and I’m not 100% sure. I’ll do a bit of digging and get back to you as soon as I can.
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Hi @Damian40818,
How are you connecting to the Pis; By hostname or IP address?
If you’re connecting by hostname, and both Pis share the same default hostname then there will certainty be a clash.
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nope, connecting via IP address using PuTTY.
IP’s are valid and I can browse the IP’s against MAC address on my wifi router so am pretty sure its the correct device responding 
I have reformatted the card and reinstalled with Raspbian Jessie (for the 2nd time) and still get the same issue.
Could it be related to the speed/type of SD card? I am using a SanDisk C2 (2 in circle) 8GB Micro SDHC card
Hi Michael,
I haven’t changed anything yet today it works 
I am setting the Pi up with VNC so hopefully it has stabilised itself.
Many thanks for having a look and offering suggestions for why it might happen.
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I guess the Pi just needed to sleep on it! Glad to hear it’s sorted.
This kind of problem is the worst though
How unsatisfying.