How to set the repair computer option when pressing Win8 when Win7 starts

1. First enter "ldd;cmd" in the start search box, then right click on cmd to select "Run as administrator" option;

2, enter "ld" in the command prompt window that opens. Reagentc /info”, then press Enter, then there will be information about windows RE. In the figure below, we can see that the current value of "Windows RE" is enabled, “0”, indicating that Windows RE is disabled. Status;

3, after determining that Windows RE is disabled, enter the “reagentc /enable” command and press Enter. This will restart the Windows RE. If the command is successful, there will be a prompt for successful operation. ;

4. After the setup is complete, restart the windows7 operating system and press F8 at startup to see the option to “Repair the computer” in the advanced startup options interface.