MSCONFIG allows you to safe boot or boot into Safe Mode. GRUB is a utility usually associated with booting into Linux systems. REGEDIT is used for editing the Windows registry. BIOS/UEFI is used for managing hardware configurations.
MSConfig (officially called System Configuration in Windows Vista, Windows 7, Windows 8 or Windows 10, and Microsoft System Configuration Utility in previous operating systems) is a system utility to troubleshoot the Microsoft Windows startup process It can disable or re-enable software, device drivers and Windows services that run at startup, or change boot parameters It is bundled with all versions of Microsoft Windows operating systems since Windows 98 except Windows 2000 Windows 95 and Windows 2000 users can download the utility as well, although it was not designed for them