Steps to Uninstall Windows 7
1.Start Windows XP.
2.Insert Windows 7 ISO DVD into DVD drive.
3.Press ‘Win + R’ to open Run command prompt.
4.Type [DVD Drive Letter]:\boot\bootsect.exe /nt52 ALL /force and click on OK.
Note: Add the name of your DVD drive in [DVD Drive Letter] field.
5.Remove DVD from your drive and reboot the system.
6.Your computer will boot up with Windows XP installation.
7.Now you can either format the drive/partition containing Windows 7 or manually remove files of Windows 7.
8.Finally remove Boot.BAK and BootSect.BAK from root system folder of Windows XP. Don’t delete these files if you have another operating system installed other than Windows XP.
Alternate Method: Simply format the drive/partition that contains Windows 7 files and repair your system with Windows XP installation CD for any booting errors.
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