Laptop Cannot Connect Wirelessly Since Removing Security Shield Virus

My daughter got a Security Shield virus on her laptop and I managed to remove it using this BC thread: [URL]. The laptop uses Windows 7. The removal seemed to work fine, although one slightly odd thing (compared to the thread's advice) was that I didn't have to change the LAN settings/Proxy server when I booted up in Safe Mode - the virus was preventing internet access but didn't appear to be doing so by the Proxy server change. So I was able to access the internet perfectly well when in Safe Mode with Networking.

I downloaded everything I needed using the laptop wirelesly and scanned/removed the 2 security shield virus files using malware bytes. Then, when I rebooted as normal in order to complete the process and update the HOSTS files, I couldn't access the internet wirelessly. The router is working fine and when I connect via ethernet cable the laptop communicates fine with the internet. It just refuses to let me connect wirelessly.

I have tried:
- Checking all firewall options in McAfee (though I guess this wouldn't enable a wired connection either if it was the problem)
- Removing and reinstalling the wireless device (via device manager)
- Deleting and resetting up the wireless profile
Just not sure what to do next....