**Your fix is determined by the length of time it has been alive.**

It's an electronic cancer that spreads by networks. We have the advantage of being physical and having control over the physical world that isn't controlled by networks.

So our physical fixes range from shutting off your own modem and router and disabling/removing the network card of the original computer to severing all of the undersea cables and continental cables that drive the internet. It can be easy, or it can be difficult and bring us back to paper stock exchange and days without the internet driving our societies and businesses.

As it stands by how you've written it, you can

**Black out the building that it's stored in.**

After hours at the location, cut the power with the main breaker or fuse box. All of the computers will turn off at once which means there won't be an escape point for the program. This is a time-sensitive operation so it would have to be done quickly, and all at once. 

First, cut all of the backup power. The program won't react because there's nothing crashing and it doesn't send any sort of input to any computer. Second, cut the main power to the whole building. The backup power was disabled so it won't come back on. 

Once you've done that, you'll have to break the law by simply stealing all the hard drives on active computers connected to the network. So you can ignore computers in storage, for example.

If you can get away with this crime and dispose of all copies, then you'll have solved the problem without having raised suspicion for your evil artificial intelligence. If you're caught, then you can still rest easy knowing that the punishment will be a lot less than if the AI escaped and took over the stock market and did billions of damages to everyone in the country.

**Physical Fix Checklist:**

 - Prevent infected computer from accessing the internet. 
 - Prevent infected computer from accessing the local network. 
 - Remove cables (from ethernet to outside cable to undersea cables.)
 - Prevent infected computer(s) from re-enabling the ability to connect.
 - Destroy infected computer(s) and/or cut their power completely.