Is the battery cover locked? Make sure the switch is to the right.

Is the battery charged or external power supply plugged in?

Perform a soft reset – see “A soft reset”.

Try removing the battery and external power, wait five seconds and then re-insert the battery.

Try removing the battery and external power and leaving the device without power overnight. In the morning re-insert the battery and external power.

Is there a light on the card to indicate it is working?

Has the card worked before?

Is the card known to work with the Zaurus? see “Wi-Fi cards – which ones work with the Zaurus”

Have you set the ESS-ID correctly? See “Going online – Wireless LAN”

Have you set the security correctly? See “Going online – Wireless LAN”

Are the PC Link Mode and Connection settings correct? See “Connecting to a PC via a USB cable”.

You can try connecting to the Zaurus using its IP address, rather than its name – see “Determining the Zaurus' IP address”. Then from your PC connect to the Zaurus using smb://<your IP address> rather than smb://zaurus. See “Using a TCP/IP-based connection”.

Are you trying to connect via a Wi-Fi connection? If so, have you turned it on by tapping on the Wifi Sharing On applet on the Settings tab of the Home page?

Is the PC Link set correctly?

If error dialogs keep appearing on the Zaurus when you connect it to your PC, then disconnect the USB cable from the PC, quit from any remaining dialogs on the Zaurus and then re-connect the USB cable to the PC. It may be necessary to repeat this process more than once.