If the disk is spinning and you hear the heads moving on startup. it is doing its POST. If you don't hear the heads moving, the disk has a problem.
If it does its POST and the disk light is on, then W11 is trying to read it and cannot. It might have been in a Linux system, it might have a damaged ID track or it might be the wrong format MBR vs GPT.
You can use DISKPART to change an MBR to GPT. That program has too much detail to explain here. Look up the info and BE CAREFUL using it, or get someone who knows how to use it.