Not only does BlueStacks fail to run and keeps loading, but some other emulators like MEmu or Koplayer also occasionally encounter similar cases, as you know, MEnu is a new Android emulator today but has proven its value. The same goes for Koplayer, the number of users using Koplayer to download and install Android apps is not small.
In addition, when using Windows 10, you may not be able to use Bluestacks on this operating system or not be able to set up an account with Bluestacks on this operating system. If you encounter this situation, please refer to TipsMake's article on fixing Bluestacks error on Windows 10 for instructions on the best way to fix it. Good luck !