Cannot turn on WIFI on Thinkpad E420

Hi, I recently changed my windows from XP to 7. I usually use the LAN to access internet, but realised after switching to Windows7 I cannot turn on the wireless capability (this is what it says to do on troubleshooting). The F9 key doesn't work anymore, which used to do on xp and the window like the one on http://forums.lenovo.com/t5/ThinkPad-Edge-Knowledge-Base/Is-there-a-wifi-switch-on-Thinkpad-E420-or-E520-Edge/ta-p/626145 doesn't appear anymore. All other keys like brightness and volume control work. Things I have already tried are:- 1.) Installed the latest drivers from the lenovo support for hotkeys integration and system interface.2.) Installed the proper WLAN drivers (It also shows the wireless networks symbol on the tray, but cannot discover any networks since the wifi isn't turned on). Plese help me.

Hello 606octranspo and welcome to community,
Kindly update the BIOS and reinstall Power Management software and ThinkPad Power Management Driver
BIOS Update Utility for Windows 7 (32-bit, 64-bit), XP
BIOS Update Bootable CD for Windows 7 (32-bit, 64-bit), XP
Restart the laptop and then press F9 key and check. Kindly check does the wireless lan card detect in device manager.
Best Regards,
Tanuj

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I cannot turn on Wifi of my Iphone 4s

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Hi fkclui,
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Has anyone experienced their wifi stuck in the off position after the latest update?

yea, i have the same problem and i was asked to replace the device since this is a common problem in 4S. and i was asked to pay $ 300 to replace it.

I cannot turn on wifi, grayed out button.

I have reset the phone and reloaded software through iTunes. Suggestions for a fix.

Unfortunately, there is another thread on this very topic, with 134 pages of complaints, suggestions, and comments. Take a look at it, and maybe something there will help you. Good luck.
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TS1559 I updated my 4S and now I cannot access my wifi due to a glitch in your software. I have reset, and restored my phone numerous times and my wifi button is still greyed out. Your phone tech blamed my phone and said it would cost $199 to replace.

I cannot turn my wifi on. The button is greyed out. This problem started after I update my software. First tech I spoke to said it was my problem because I chose to update the software and since I was out of warrenty, I would have to pay $19.99 for service agreement before anyone would talk to me. The next tech admitted this had happened to ssomeone else and stated it was a problem with my phone triggered by the software update, and because I was 57 days out of warrently, it would cost me $199 for replacement phone. So basically, anyone that chooses to upgrade their software, risk messing up their access to wifi and have to pay the developer of the software to fix the problem, their program caused. Does anyone have a clue how to fix this. Why wasn't I informed of the risks that could occur if I updated my device. I hNave reset, restored my device with no change. I have even reset to original with all my data deleted. Now what??

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HT4623 I updated my 4S and now I cannot access my wifi due to a glitch in your software. I have reset, and restored my phone numerous times and my wifi button is still greyed out. Your phone tech blamed my phone and said it would cost $199 to replace.

I cannot turn my wifi on. The button is greyed out. This problem started after I update my software. First tech I spoke to said it was my problem because I chose to update the software and since I was out of warrenty, I would have to pay $19.99 for service agreement before anyone would talk to me. The next tech admitted this had happened to ssomeone else and stated it was a problem with my phone triggered by the software update, and because I was 57 days out of warrently, it would cost me $199 for replacement phone. So basically, anyone that chooses to upgrade their software, risk messing up their access to wifi and have to pay the developer of the software to fix the problem, their program caused. Does anyone have a clue how to fix this. Why wasn't I informed of the risks that could occur if I updated my device.

FYI, this is a user to user technical support forum.
No one from Apple monitors, reads, or responds here.
Try the following:
Settings > General > Reset > Reset Network settings
If the Wi-Fi is still not working, basic troubleshooting from the Users Guide is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.
The vast majority of users upgrade with absolutely no issues.

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After many months biding my time I have just embarked upon upgrading my Portege Z930-11G to Windows 8 Pro.
Largely this has gone to plan with the exception that after running the Toshiba Upgrade Assistant I've lost the Fn key display and about half the keys no longer seem to function at all.
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So now I cannot enable the WiFi on the machine.
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Before running the upgrade assistant the Fn key brought the key display up across the top of the screen and I surely wish I'd turned WiFi on at that point.
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> So now I cannot enable the WiFi on the machine.
First of all you can enable and disable the WiFi using function key but you can also enable the WLan in Windows 8 settings
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Cannot turn on WIFI on Thinkpad E420

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