Windows 7 Startup Repair.

Install Windows XP over Windows 7 in a dual boot.

We can install multiple operating systems in a computer. But the installation should go from lower version to higher. So that when you install Windows XP into a computer where Windows 7 is already there, its booting file ( bootmgr ) will replaced by ntldr of Windows XP. On that time after Startup repair only Windows 7 will able to load.

Windows 7 Start-up repair.

1) Insert Windows 7 DVD and boot from it
2) Wait for Windows 7 to load files.
3) Choose Windows 7 language and other settings.
4) Click on the repair your computer link.
5) Wait for System Recovery Options to locate Windows 7 on your computer.
6) Choose your Windows & installation.
7) Choose the Startup Repair Recover tool.
8) Wait for Startup repair searches for problems to repair.
9) Now Startup repair will attempt and repair your Windows 7
10) Restart your computer.

Windows 7 boot screen.

but actually we have to get the following boot menu to load both of the Operating Systems.( Windows 7 and Windows XP )

If your Windows XP cannot found after startup repair, you have to do bcd edit. This is normally do in command mode. But a simple tool is available called EasyBCD to edit BCD in a simple step.

                                                      Click here to download it.