Windows wont boot without flash Drive USB Drive CD

Windows wont boot without flash Drive USB Drive CDThis problem cause by bootloader, a program that load your operating system. So, if your hard disk (internal) does not have the bootloader it wont boot to windows because no program will load your operating system (Windows XP/7/8/10 etc). In one case (Asus Notebook) the bootloader not installed in C partition (the windows partiton he use to