Member Avatar for thitae

I have recently bought the new kindle fire hd and authenticated it to my home wireless, okay that worked after I turn off both the kindle and wireless modem and turned them both on at the same time. The problem is now that everytime I do this and my son uses the kindle my laptop wireless automatically shuts off and gives me a messae telling me that I have somehow cancelled my wireless connection. The only way for me to re-establish laptop wireless connection is to turn off the kindle, plug in my ethernet cable into the modem and restart the modem and computer at the same time and reconfig the wireless. Can someone please tell me how to fix this so that I can use my wireless for both the kindle and laptop without having to reset the modem each time. Oh, and before anyone asks I have set my sons DSI to my wireless before and run them both at the same time without a problem, so more than one device can run on the wireless.

Edited by pritaeas because: Moved.
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  • Latest Post Latest Post by hazzag1995

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For — a focused diagnostic and low-risk fixes that build on ’s and ’s hints but add concrete steps and checks not yet covered.

Start by collecting facts (IP and MAC) from each end so the problem can be proven instead of guessed. Useful commands (Windows) and places to look on devices and the router:

ipconfig /all
ipconfig /release
ipconfig /renew
arp -a
ping <router-IP>

On the Kindle look in Settings -> Wireless (or About) for its MAC and current IP. In the router admin page check the DHCP client table / ARP table and the system log for DHCP or IP-conflict messages.

What to check and change next (practical, low-risk):

  • Confirm the laptop is set to obtain an IP automatically (no accidental static IP that collides with DHCP).
  • If the router’s DHCP pool is small or lease time is long, increase the pool or shorten the lease temporarily. Better: create DHCP reservations (bind each device MAC to a fixed IP) so the Kindle and laptop always get distinct addresses.
  • Disable guest/AP isolation or any “smart connect” feature that merges bands into one SSID (split 2.4/5 GHz SSIDs temporarily to rule out band-handoff issues).
  • Update router firmware and check the router’s maximum-client limit. Some ISP-supplied combos have buggy DHCP behavior when many clients or certain power-up sequences occur.
  • On the laptop, disable any “allow the computer to turn off this device to save power” setting for the wireless adapter in Device Manager.

Notes and cautions: record current router settings before changing them. Reserving IPs or splitting SSIDs are reversible and usually solve device-conflict symptoms. If problems persist after these steps, the behavior often points to a router firmware bug or faulty hardware; at that point a factory reset or trying a different router will confirm whether the modem/router is the root cause.

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Member Avatar for phorce

This is an introduction forum so probably not the best place to ask this question. You can ask this question in the "Networking" forum.

Is the router kicking out the same NAT IP for the Kindle and therefore when it tries to connect to the laptop, it kicks it off? Interesting. Have you run the recent update on the Kindle fire? I hear that people are having problems with the WIFI.

Member Avatar for hazzag1995

Also, check your router configuration to check it has enough IP address leases, i have known some home routers to allow only minimal wireless devices to connect. It may be called DHCP leases under the router configuration page.

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