Hi everyone, My iMac recently had a graphics card failure and because of that I was unable to properly restore it with a new operating system. So, I connected it to my MacBook Pro via FireWire to fully erase the drive with target disk mode. This proved successful as the Mac boots to a file folder with a question mark, indicating nothing to boot from. However, after I had sold it on eBay for parts or not working, I realized that it was still tied to my Apple ID and that I could see it in the Apple Support app and find my iPhone. Because the hard drive is erased and even if it wasn't I wouldn't be able to access the operating system, how do I untie the Mac from my Apple ID? Thanks.