To troubleshoot the issue of being unable to start a Windows XP/Vista/7/8/10 hard drive via VirtualBox or a different PC, where only the boot menu is accessible and safe mode results in a Blue Screen of Death (BSOD), you can try the following steps: 1. Check Hardware Compatibility: - Ensure that the hardware of the system (or VirtualBox configuration) is compatible with running the respective Windows OS. 2. Windows Repair: - For Windows XP/Vista/7/8/10, try booting from the installation media and use the repair options to fix potential startup issues. 3. Safe Mode: - If Safe Mode is causing a BSOD, it might be due to a driver or software conflict. Try using the "Last known good configuration" option. 4. VirtualBox...