First, a quick recap. Bubble Bobble Hero 2 is not the original 1986 arcade classic. Instead, it is part of the fan-made or indie revival scene (depending on which version you are referring to; many search for this title regarding a specific fan-sequel or a bootleg PC port of the Japanese arcade update).
Sites like MyAbandonware and XTCabandonware provide versions of the game that often include pre-patched executables or instructions on how to bypass CD checks.
If you’re having trouble playing a legally purchased copy of Bubble Bobble Hero 2 due to disc or DRM issues, I’d be happy to help with legitimate solutions, such as:
: Replacing the original DRM-locked launcher with an unlocked version sourced from historical abandonware archives. Navigating Modern Safety and Security
Windows (optimized for older 32-bit versions; may require compatibility mode or a virtual machine like VMware for best results).
—trying to beat those challenging levels you couldn't as a child.
The original version of Bubble Bobble Hero 2 was designed for Windows 95/98. On modern 64-bit systems, the legacy copy-protection (DRM) often fails to recognize original discs, even if you have them, leading to errors like "CD-ROM Not Found".