Win7 startup repair (Ubuntu deletes into the grub rescue situation)

Cause: installed win7, and then installed Ubuntu in another partition. Later, the partition where Ubuntu is located was removed. After the system starts, the command window appears: grub rescue:_ The correct solution: 1. Insert the optical drive into the win7 installation disk or boot with USB (win7 supports USB to directly start the installation): 2. After selecting the language, go to the next step and select the bottom Repair instead of continuing the installation; 3. After searching the installed system, go to the next step; 4. Do not let Windows automatically repair, useless, enter the command prompt mode; 5. Type bootrec /fixmbr Enter; bootrec /Fixboot Enter; 6. Restart the system to restore Windows 7 boot mode.