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Discussion Starter · #1 ·
Hello, I'm having issues with my Lenovo z575 (Windows 10) and its wireless adapter: Ralink RT3090 802.11n

My computer can run ethernet, but I cannot detect any wireless networks and claims that "no networks are available" despite the fact that I have 3 other devices that can connect to my home wifi.

I've tried updating my Ralink drivers, but I don't think they're doing anything.

Ralink doesn't show up in my Network Adapters tab in Device Manager, even with hidden view on.

A wireless adapter doesn't show up in my "Network Connections" despite the fact that my ethernet, bluetooth, and VPN networks do (bluetooth and VPN are disabled)

I've tried a lot of the conventional solutions to no avail, and I'm pretty sure this is an issue with hardware or at least my Ralink wireless adapter is being disabled (I'm running my laptop on high performance, but I can't directly edit the wireless adapter since it doesn't show up in the Device Manager)

I've system restored to a date before I was encountering problems with my wifi, but nothing changed.

I've open my laptop up and the wireless adapter seems just fine, doesn't look damaged, tampered with, or "out of place"

Any advice, tips or solutions? It would be much appreciated.

· Registered
2 Posts
Discussion Starter · #3 ·

· TSF Emeritus
8,379 Posts
Run Xirrus Wi-Fi Inspector
Download and install

If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file to the faulty PC and install the program.
You will now need to take a screen shot and copy that back to the working PC and attach the screen shot in a reply on the forum here.

If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
enter you details
Download this file "DOWNLOAD WI-FI INSPECTOR Vx.xx "
( the site now appears to allow webbased emails like gmail, hotmail, outlook and yahoo now )

There is also a xirrus gadget, But that does not have all the fuctionality "DOWNLOAD GADGET Vx.xx

Alternative links - Use the links below
Do NOT use any of the download managers offered - Cnet , just use the direct link below - and click on the download button
Xirrus Wi-Fi Inspector Download
Xirrus Wi-Fi Inspector - Free download and software reviews - CNET

Then run and install the program - on a wireless enabled Desktop/All-in-1/Laptop
if you get an error - You will need to have NET Framework installed for the WiFi Inspector to function.
Stand alone version framework

On windows 8 - (i do not have windows 8) but, it would appear that, When you first try to run, you may get a message that .net framework is needed, and included in that message is a link to download/install.

Run the program

A user guide is available here

post a screen shot of the program running.
if there are a lot of networks showing can you click on "networks" top lefthand area - so we can see all the network information.

post which SSID name is yours, its located in the list, under network "Adapter Name" (1st column)

For a reliable (or robust as the Xirrus user guide says) wireless connection you need a signal of about -70 dBm or better. "A desirable signal level for a robust Wi-Fi connection will be green".
note: the signal level is a negative number, so for example -88 is worst and -40 is better

To post a screen shot of the active window.

Windows XP
Hold the Alt key and press the PrtScn key. Open the Windows PAINT application (Start> All Programs> Accessories> Paint) and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.

Vista or Windows 7
you can use the "snipping tool" which is found in Start> All programs> Accessories> Snipping Tool
How to use the Windows Snipping Tool

Windows 8 & 10
you can use the snipping tool > Open Snipping Tool
(From the Windows 8 Start Screen, or windows 10 Search, type "snip" and press enter)
(From windows 10 - All Apps>Windows Accessories>Snipping Tool )
>Press the Esc. key.
>go back to your Windows 8/10 start screen - Swipe from left or press Window Button
>Press Ctrl+PrntScr button to use Snipping Tool
see here
How to take a screenshot in Windows 8 - Opinion - PC Advisor
How to take a screenshot in Windows 8 - How-To - PC Advisor

To upload the screen shot to the forum, open the full reply window ("Go Advanced" button) and use the Manage Attachments button to upload it here.
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