Repair start-up issues / Restore the Windows 7 MBR (Master Boot Record)

Error: Windowssystem32winload.exe missing or corrupt

Bootrec.exe tool can be used to repair the MBR (master boot record, boot sector and boot configuration data)

To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps:

Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer.
Press a key when you are prompted.
Select a language, a time, a currency, a keyboard or an input method, and then click Next.
Click Repair your computer.
Click the operating system that you want to repair, and then click Next.
In the System Recovery Options dialog box, click Command Prompt.
Type Bootrec.exe, and then press ENTER.

Type following command:

bootrec /fixmbr

Afterwards, for good measure, I also ran:

bootrec /fixboot

Note: May you heard “bootcfg” , its for older version of Windows OS (XP etc)