virus issue

[Scott]

OS will never be the same again, just reinstall windows... So much easier,

This. Always.

As for backing up your data, that's good, but be wary that some viruses will spread to external drives and you can end up with the same thing when you reinstall.

Oh, and when installing windows, make sure that you are not connected to the internet. Before reinstalling, save the malwarebytes, avg (or avast, Microsoft Security Essentials, etc.) to the external drive so those are the first things you install before connecting to the internet.