Hello, I recently just installed a fresh copy of Windows 7 from my vista hard drive (full of viruses) onto another drive, now when I boot the computer up I boot it from vista now it asks me what OS would i like to use I select windows 7, everything goes fine. Now when I unplug my vista hard drive and boot from windows 7 drive it says, "BOOTMGR is missing press ctrl+alt+delete to restart." I want to vista put on another onto another computer this is why. Really it's not a problem but I'm scared the viruses are going to leak. -.-