System model: Samsung sens X22 Bios: Phoenix trustedcore(tm) NB service pack 3B version 1.22 11AJ Processor: Inter core 2 duo t8300 @ 2.40ghz memory: 2g --------- I used to have windows 7 operating system in my laptop (Drive: C: ). i decided to install windows xp on (Drive D . for me to have 2 OS. i have successfully installed windows xp on (drive d. Problem is, i cant go back to windows 7 anymore.
Use the Windows 7 disk to fix the installation. That should repair the bootloader. WinXP's bootloader can't read Win7's partition.