Windows 7 disappearing windows 7

[gizmosmustang]

ok I had to reinstall windows XP on my computer for some programs and now my windows 7 install is not booting anyone else seen this problem and if so can it be fixed through xp? the boot choices aren't even there it automatically boots XP

 

[Rammitt]

You don't say whether your Win 7 is on the same drive as XP, in a different partition. From experieince, I NEVER put 2 operating systems on the same drive....some people will argue it is perfectly safe, but as a Software Diagnostics Engineer, I would never advise that.

I also don't use Bootmangers (software type). I have XP on one drive, and Win 7 on the other. I then choose which to boot in the BIOS. This has NEVER given any problems.