missing bootmgr error

[AllyMelmac]

When I boot my PC I get the error message BootMgr missing Ctrl + Alt + Delete to restart, when I reset the computer it just cycles back to this error message. I then pull out the sata cables for all of the drive apart from the one with windows on it and it starts into windows fine. I put in all the over cables and I then have full access to all my drives with no issue until the next time I restart (well maybe sometimes it boots up with no issues).

I have 2 SSD's one purely for windows 7 and 1 mechnical drive running on a MSI Z97M Gaming mobo using UEFI which I think might be the issue but not really sure.

Any idea why this is happening and more importantly how to fix it?

 

[qazzi]

change cable maybe. you said you pulled it out it work...also check your boot drive in the BIOS make sure it is where the OS is.

 

[Max Witham]

Hi try reseting you computer and boot from Windows CD. If you can't boot from Windows CD unplug the hard drive says connection and try again.