After the dual system is installed, the computer cannot enter the system.

The computer was originally installed with Windows 7 and later wanted to install another Linux system,

A dual system is formed. After Linux is installed, the boot sector is overwritten,

After the boot, you cannot enter the system and stay on a black screen

The cursor keeps flashing in the upper left corner of the screen.

Solution: You need a system disk (win7 or WINXP ),

Set the bios so that the system starts from the disc and enters the PE system and PE system.

Many tools are attached, including diskgenius,

Click hard disk (d), and click re-create Boot Record (MBR) (m) again )]

You can fix the Boot Sector, restart the computer, and then the computer can re-enter the system,

Start normally.

After the dual system is installed, the computer cannot enter the system.