Need Help Windows 7 Drive not Bootable

[Da[]San]

I've reinstalled Windows 7 because i got a new hard drive and in error had two drives wired up when i installed and now the C drive which has Windows 7 on it is not bootable. Is it possible to change ?

Just for clarity, i can't boot Windows without the other drive being wired up.

 

[Da[]San]

Yeah thought of that one - but was hoping for a simpler and quicker solution