1) Press Windows + I to open the Settings app. 2) Click Network & Internet. 3) Click WiFi on the left, then click Manage known networks. 4) Click Add a new network. 5) Fill in the respective fields like Network name, Security type > checkmark the box next to Connect automatically, then click Save. Fixes for Lenovo Laptops that won't connect to WiFi. To begin, check to see if you have enabled Wi-Fi from the system tray. If you can't turn on Wi-Fi or connect to a Wi-Fi network, restart your computer and see if it works now. Sometimes some minor glitches in Windows can also cause such connectivity issues that get fixed by the system restart. Turn off the Laptop. 2. Remove the battery and press and hold power button for almost 5 seconds. 3. Reinsert the battery and turn on laptop. 4. Try connecting the wifi now. It should work. Else try running the troubleshooter. With the computer turned off and unplugged, remove any external devices (USB drives, printers, etc.), then hold down the power button for 15-20 seconds. It will drain any residual power. Next, reconnect the charger and see if your PC powers on. Remove the battery, but keep the laptop plugged in. Continue below. To turn on/off the Wireless in Windows 7 using the software switch. 1. Look in the lower right corner of the desktop for the Windows 7 power icon. Looks like a battery with an AC plug. 2. Right-click on the power icon and a popup menu should appear. Choose the Windows Mobility Center and click on it. 3. To check and enable a network adapter on Windows 10, use these steps: Open Settings. Click on Network & Internet. Click on Status. Under the "Advanced network settings" section, click the "Change Sorted by: 0. I solved the issue by going to Device Manager. Start > "Device Manager". Opening the Network Adapters section. Clicking on the Wifi device (in my case Ralink RT5390R ), clicking on the Advanced Tab, selecting Radio On/Off and then on the right side, selecting Enable from the dropdown. Now it works! Select the Network, Sound, or Battery icons ( ) on the far right side of the taskbar to open quick settings. The Disconnected icon appears when you're not connected. On the Wi-Fi quick setting, select Manage Wi-Fi connections . Choose the Wi-Fi network you want, then select Connect. Type the network password, and then select Next. First, fire up Settings by pressing Windows+I on your keyboard. On the main Settings page, click "Network & Internet." On the Network & Internet page, on the left-hand side, click "Mobile hotspot." On the right-hand side, turn on the "Share my Internet connection with other devices" switch. No luck. - I don't have any old drivers to 'roll back', it was Windows 7 anyway, so they're incompatible with 10. - I've tried resetting network settings through command prompt. No luck. - The Sony Vaio site doesn't have any alternative network adapter drivers for anything later than windows 7. 97o3.