W7/Linux Mint dual boot upgade

I'm going to step out for now, as I think I'mprobably confusing you. Fix the HDD problem first, then I'll weigh back in

Hang on I have an pdf manual. You mean the actual physical port on the mobo.?

severedsolo said:

Im assuming you have lost the ability to dual boot too?

Yup. That failed last night. As I said above it wouldn't boot so I took it off in easyBCD.

johnwillyums said:

Hang on I have an pdf manual. You mean the actual physical port on the mobo.?

Yes connect the Windows 7 HDD to the #1 SATA port of the mobo and set it as the first boot device in the main PC BIOS.

Leave all the other HDDs disconnected for now.

Here's a pic of the mobo layout. As I say I believe that the uppermost drive in the case is the W7 one. This morning I disconnected the other 2 and it finally booted.
The Sata cable from that drive is coming form either sata 2 or sata 3.

I'm not sure I can do that the BIOS is not really behaving itself.

I just sent you a PM, I have to go out for a while and will be back after bit.

I'll try. Hopefully be back shortly.

Ok. Thanks for your help:)

Ok. I've now disconnected all my drives and then put the W7 drive in what should be sata port1.
It's not very clear which is 1 and which is 0 as they are on top of each other so it depends how you look at the diagram.
I notice it says disk 0. Does this mean I've got the wrong port?
Anyway, it has booted ok and I've left the other two drives unconnected as you suggest.
I notice that at boot, when the boot screen comes up it now only has Windows 7 (obviously) however if I try to choose this by pressing enter on the keyboard nothing happens. I have to wait. I'm sure pressing enter resulted in instant action previously.
I also now know which is the 500GB drive and the other 1TB drive.

I'll wait for you to get back before experimenting any further. I think it's me bumbling around that has caused this snafu.

Thanks to you both for your input, John:)