My WiFi light is not lit up on my Inspiron 1520. I cannot detect any wireless networks.

you haven't inadvertantly pressed the keyboard key that urns wireless off have you?
some older network cards are incompatible with the latest encryption so you could try setting the router up to use wep encryption 64bit instead

You need to redownload the drivers for you inspiron N5010 Go to this link: http://support.dell.com/support/downloads/driverslist.aspx?c=us&cs=19&l=en&s=dhs&ServiceTag=&SystemID=INSPIRON_N5010&os=W764&osl=en&catid=&impid=

When you get there Then scroll down Then where you see "Operating System", select your operating system (ex: XP, Vista, or Windows 7). It will then show all the drivers for your operating system...scroll down until you see the network driver software and then download and reinstall the Dell Wireless 365 Bluetooth Module and download the Dell Wireless WLAN 1520 Half MiniCard Hopefully this will help...good luck.

First, turn the wireless switch OFF and switch it back ON
(make sure sure that there is a BLUE light on the wireless indicator)
then press Fn+F5 (this will ENABLE the wireless capability of your computer)
>Try to detect wireless networks

>comments suggestions ratings and violent reactions will greatly be appreciated

check your modem if lights lit up specially for wireless
- then check WLAN Autoconfig(if vista or windows 7)
wireless zero config if XP
start menu>>start search type services.msc>>wlan autoconfig>>set service status started and start up type automatic then go to recovery tab ( first,second and subsequent failure as restart the service then click apply and ok
- if ur wireless not able to detect ur network check wireless switch if its on then Fn+F5

check on wifi if it is lit up, if not try press and hold Fn and F2. verify if the wireless card is detected in devicemanager - it is under network connection - make sure there is no red x or any exclamation mark on it

Make sure it's turned on. Use the Fn plus that antenna looking function key. If still no response,replace the wifi card accessible at the bottom of the laptop.

if you are on a wifi zone it must be detected by your laptop if not maybe your network connection setting for detecting wifi is off. try changing the settings of your network connection. and change it to auto detect the network connections

by default, dell systems' switch for wireless can be done by pressing Fn and tap F2. The wifi light should lit up. Your modem is integrated to the motherboard. If you were able to lit up the wifi light, this should be able to detect wireless signals for you to connect to.

Hi Sir / Mam,
I have 2 Questions?

Are you able to connect to Wireless?How about the Wired connection?
Try to update the Wireless drivers.
Also check if the wireless is getting detected in BIOS and Network Adapters in Device Manager.Apart from the wireless are all other lights glowing in the cluster.
If yes get the light assembly changed.

it'll not fit since your laptop needs an expresscard.
here are the list of the wireless cards that you can get:

Dell Wireless 1390 802.11g Mini Card Wireless Dell Wireless 1490 802.11a/g Mini Card Wireless Dell Wireless 1505 Wireless-N Mini Card Intel Pro/Wireless 3945 802.11 a/b/g Mini Card Wireless Intel 4965AGN Wireless-N Mini Card Dell Wireless 5510 HSDPA ExpressCard34 Dell Wireless 5520 HSDPA Dell Wireless 5720 EVDO or a Linksys Wec600n Wireless-N Expresscard Adapter