Internet access blocked on x64 machine

[raymart]

I am running Windows 7 64bit on a Sony Vaio Laptop.

Some Malware has infected the machine, and prevents any internet access, even though I can ping my home network router, and other machines on the network work fine.

I have tried using AVG to clean the machine, but it didn't find the problem. I cannot update the virus database, because I don't have access to the internet, and when I try to use a USB stick to transfer the file, a message says that the database file is not suitable for installing on a 64 bit machine.

I've tried to install mban, but again, a message comes up saying that the version is not suitable for my 64 bit machine.

Any help would be appreciated.

[Firefox]

Hello and Welcome to Malwarebytes

Being that you are probably infected, feel free to follow the instructions below to receive free, one-on-one expert assistance in checking your system and clearing out any infections and correcting any damage done by the malware.

Please see the following pinned topic which has information on how to get help with this: Available Assistance for Possibly Infected Computers

Thank you