WiFi turns off upon physical stimulus

Hey community,
I have an R400, model 7440DK5 that has served me very well over almost 3 years at this point. However over the last month or so it has been having a very peculiar problem: the wifi keeps turning off when the laptop receives some physical stimulus, for instance if I pick it up and move it to another table. The wifi doesn't return until I reboot the machine.
What is particularly puzzling about this is that the problem appears due to something physical, say jostling the laptop, but is resolved by restarting the system, which would suggest that it is a software/firmware issue.
My laptop is still under warranty so if no one can point me towards any ideas then I'll send it back. I was just wondering if this might be a common problem with a simple fix, although I searched the web and could not find much in the way of similar issues.
Some more details about the problem:
- When this happens it's as if the computer forgot it had a wifi adapter at all. All wifi related items disappear from device-manager and there is no longer an option to connect to a wireless network.
- The wifi light turns off
- Bluetooth remains functional as normal
- The laptop does not have to be on to be jostled; if it is asleep or in hibernation and I move it, it will likely resume without wifi.
- Sometimes restarting does not fix the problem. If this is the case usually what works is leaving it off (and stationary) for 5 or 10 minutes and when I turn it on again the wifi will be back on.
- Battery vs. charging seems to make no difference
Things I have tried:
- Updating the driver (tried both versions 13 and 14)
- Toggling the radios switch
- Not allowing the device to turn off to save power
Thanks all!
berban
Solved!
Go to Solution.

Hey, just wanted to update this thread with the outcome of my repair attempt. The first time I took out the adapter it worked well for about 3 days but then started acting up again, slowly at first but over the course of a couple days it was just as bad as it initially was. So I took it out again and this time snuggled some foam up against the adapter to try to keep it from moving around. This worked for about a month; unfortunately it has just recently been disconnecting again, only once or twice so far but I think the underlying problem has not been solved. Also my 'n' key just became fussy... therefore I guess I'll be sending the computer back anyway.
My only fear is that theyll do the same thing that I did (which did indeed fix it for a little while) and then send it back, only for the problem to return after a day or two
Anyway, thanks again for your help, guys

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I have a mid-2010 iMac and just purchased a 2TB TC, can't join existing wireless network with AC standard so attached to iMac via ethernet with TC wifi turned off. How do i access TC now? not showing up in disk utility or on desktop. working fine with TM

I have a mid-2010 iMac and just purchased a 2TB TC, I just found out that it can't join existing wireless network with new AC standard so attached to iMac via ethernet with TC's wifi turned off. How do i access TC now? not showing up in disk utility or on desktop. It is working fine with TM. My cheeper seagate drives etc kept crashing, so i didnt trust cheeper back up options anymore. Connected those drives to TM via firewire and could see the drives and access them.
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Ok... it is getting a bit clearer but there are still some questions.
I connect to the internet via airport only and it is pretty fast.
I was assuming airport in this statement in your first post meant the TC or the Express.. but I now realise we are still in the mass confusion stage where apple calls everything wireless an airport. So what you mean is the airport internal card of the computer??
Also, I didn't want to bridge TC with my new fios router that I paid 100 dollars for, to get N speed and also paying 10 dollars more a month for fast speed. I heard that bridging slows down everything and then there can be port issues with mail etc.
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If the computer is close it will be faster than the FIOS.
You can run both wireless networks with different names.. so it is clear which is which. But you can also setup roaming so the computers themselves pick which is the best wireless.
I tried extending the wireless net work and tried joining wireless network, but the TC kept crashing and I had to keep resetting the TC. the Apple support person said these, extend wireless network and joint wireless network, are no longer a connection option with the new TC because of the new AC protocol.
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But that has not changed.. I don't think Apple support is correct.. there has been no change with the AC model.. it is simply a fact that apple routers do not work in join wireless mode other than as a dumb client. The same applies to AC as to the earlier version.. but I have asked another person to check this.
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