Hi, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially, bear with us; re-confirm and post back with the complete model number of the device that "...can't connect to...wifi..."
What is the brand and product description please?
Please try: "...on the Kindle goto Menu - Settings and look at the bottom right corner at the Version Number, if it starts with a 1 then you have the K1, if it starts with a 2 then you have the K2, if it starts with a 3 you have the K3..."
The firmware version can be used on a number of models as even the old models can be ugraded to this firmware version.
Unfortunatewly, no. The firmware version does not help determine the exact model number.
Still, it is possible that your WiFi / router is not set to publicly broadcast its SSID hence can not be detected by the Kindle. Whereas the laptop has been using this WiFi/router previously and therefore able to identify since already a known network" to it.
Have you checked the router itself?
Agree without a specific model number to start with.