Access Advance Recovery Options through Installation Media
Since you cannot boot the system, you will not be able to access the recovery options in the usual way. You will need the bootable DVD/USB for your operating system to access the recovery options. Follow this procedure to boot from DVD/USB. Insert your Windows installation DVD into the DVD drive. You can also use a USB installation media if have one. Change the BOOT order from BIOS and set it to boot from your installation media. Once done, start your computer and access system boot loader.
Method 1: Automatic Repair
Method 2: Command Line Repair
Boot your computer from the installation media using the method described above. When Windows setup screen shows up, select language, time and currency format, and the keyboard or input method. Then click Next. On Install Windows screen, choose Repair your computer and select Troubleshoot. On the next screen, select Advanced Options. On the next screen, select Command Prompt. Enter your username and password if prompted.
A command prompt screen will appear. Type the following command and press Enter. After this command completes, type the following command and press Enter.
If your Windows installation drive is not the C drive, substitute C: with the drive letter. For example, if you have installed Windows on the D drive, the command will be bcdboot D:\windows These two commands will repair your boot data. Now, you can restart your computer. Once done, you should be able to boot without issues.
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