Installation of Mac Pro 3.1 OS
Installation of Mac Pro 3.1 OS
Consider purchasing a USB stick that includes the operating system installer. These are available on eBay.
Install OS X El Capitan as it’s the latest system your Mac can handle
I used the instructions from the website https://www.wikigain.com/create-bootable...-transmac/
Check the DMG for any changes. Find InstallESD.dmg at https://7labs.io/tips-tricks/el-capitan-...nload.html
Reading the text inside those black boxes is essential for grasping the problem. Check with others—perhaps a friend has a Mac. Ask if they can lend you installation media to begin. If you're not concerned about macOS, you can install Windows on any machine and put it on a hard drive. At least you'd be able to test its performance.