This is an old PC I have. I wanted to put Linux on it and do some experiments with homelabbing, but it's so old-it only has 512 MB RAM and around 20 GB storage, so I don't think I can use it that efficiently.

Also, my main problem was that I couldn't put Linux on it because it doesn't support USB boot, and I don't have any CD to burn nor a burner. I tried other workarounds as well, but they didn't work. On top of that, since this PC is full of viruses, I also can't connect it to the internet.

So, I'm just going to sell this bad boy and purchase a secondhand PC to use as a home server.

My questions are:

1. Since USB boot doesn't work and I can't connect to the internet, how should I format this PC so I can sell it without any worries?
2. Are there any precautions I should take before selling this PC?