Solution: for the repair operation of hard disk main boot record (MBR), we can solve this problem easily by using the repair tool mdash installed in the Win7 installation CD, mdash and Bootrec.exe.The specific steps are: first, to install the Win7 disk boot computer, disk boot when completed, press the Shift+F10 key to the command prompt window and enter the DOS command ldquo; bootrec /fixmbr; (Figure 1), and then press the Enter key, follow the prompts to complete the master boot record of the rewriting operation can be. 图1—