I followed a link from facebook and a suspicious pop-up came up. I believe at this point my desktop became infected.
The wireless internet connection indicator in my system tray showed a red "X" over it. I was still connected, however, and able to access the internet. When I clicked on the internet connection, it just said that my current settings didn't match those of the connection. At this point, I updated my anti-virus software (free version of Avast) and Malwarebytes (also free version) figuring I didn't have long before I lost the internet completely.
I tried deleting the internect connection profile from the "Manage Network Connections" section of the control panel. WHen I tried to reconnect to my home wireless network it continued to tell me that my passphrase was incorrect, and it wouldn't connect. However, I know that the password is correct, and that the wireless router is (was, more on that later) connected to the internet because I could access the wireless network with other devices (iPad2 for instance).
I ran a "quick scan" in Avast, didn't find anything. I ran a full scan with Malwarebytes and it found a lot of things. I removed them. I restarted my computer and logged in using Safe Mode with Networking. I ran another Malwarebytes' scan and it didn't find anything.
The issue persists.
I tried resetting the wireless router to factory settings. I was able to connect to it with my desktop again and access the router settings. I was able to rename my wireless connection and assign it a password again. However, as soon as I did this, it reset the connection, and then my desktop was unable to connect to it again. It goes back to telling me that my passphrase is incorrect whenever I try to connect to it.
The killer here is that now that I've done this, my other devices can still connect to the wireless router, but they no longer reach the internet.
Unfortunately I'm at work right now, but I'm concerned that I won't be able to access these forums at all once I return home unless I can restore my internet connection.
I am seeking advice on how to address the infection in my home desktop PC. As far as the internet connection goes, my plan is to disconnect my home PC from the wireless completely, reset the router to factor settings (again) and try to set up the wireless router using a clean system (probably by bringing my work laptop home and using it to set up my wireless router again).
It would be great to know if there is any additional software I can download from here and install on my home desktop using a flashdrive or something since it seems to be prevented from accessing the internet directly...
Thank you for reading my post and I'm hopeful you can help me get this straightened out.