I cannot get my wifi device to work

reinstall the driver for wifi device and restart your computer and check whether it works or not . if still it dont work format your pc and install all the drivers . it will surely work now.

Hi! Try to use the function key: FN+F11 to enable the wireless adapter. Check device manager if driver is properly installed.If yes, try to update the driver:right click on the realtek wireless LAN in device manager and then choose properties and then click update, choose automatically look for update from internet.If this doesnt work try to uninstall and reinstall the driver (make sure you restart the system after reinstalling the driver). If you have AVG as your anti virus sw try to disable it or uninstall it and then check if it will work.hope this will help...

Check among the CDs you got when you bought your laptop. You'll see one called 'drivers'. Inside your drivers CD you'll find a Network Adapter driver. Install it and your wireless should work.

May be your driver for the Wireless device is not installed, you can download the Wireless driver for your model from here (Under the Network Category)
Regards, Waqar.

Hi,

I am sure that you have installed the wireless drivers correctly after formatting the machine.

If not, you can download the wireless card drivers from HP's website & reinstall them.

This should fix it ..

Thanks

Shiv.

Uninstall any wireless drivers for have incorrectly install in device manager. Reinstall the Chipset driver over whatever is installed and then reboot. Extract the 174291 driver into a folder and manually install the wireless and it should work

haha worrying isnt it...
after reinstallation of windows no drivers for blutooth , wireless quite often modem and same vga,
windows by default does not install because need specific software ...(drivers)
what you need to do is first of all find out what wifi it is ; like wlan400 e.g.
you then need to download and install the driver for it .as soon as the driver is present windows will detect and install device,
look in device manager for devices with no drivers intalled.
same precedure for each device.

if drivers installed device is looking for wifi manager which is the software package for wifi.
you can goto control panel open administrative tools select sevices and scroll to wireless zero config and press start.
this will then use windows settings.done

Try installing the original and update wireless driver. 

http://esupport.sony.com/US/perl/swu-list.pl?mdl=VGNSR190EBQ

And 


http://www.kb.sony.com/selfservice/documentLink.do?externalId=C455228

You need to reinstall the wireless driver for your model laptop which you can find at the hp/compaq website. Just click on the link for support and provide information on the model of your laptop and you will be redirected to the proper web page that contains all the drivers for your particular laptop. I did this when my internal wifi did not respond when I pressed the wifi button. After installing the driver everything worked great.