missing operating syatem?

i got this error whenever i successfully finish the installation,
the scenario is that i have a window 7 installed on my Intel laptop.

any solution to this prob? i just want to have dual o.s.

Put in your windows 7 disc and go to repair , That should repair the boot loader I had the same trouble lol , Then once your into 7 you need a program called EasyBCD I think its called to dual boot .
Im by any means a pro but that should work !!
Hope I helped
Leon