MP wont boot in os x from windows!

[mfka]

Guys please help. I just did fresh install of Windows 7 on one hard disk, and after that i can't force my MP to boot in os X which is on SSD.
I tried to remove Windows disk but than i get after grey efi screen black screen with message to insert bootable disk!

What should i do, i need to have everything back till morning, please help.

 

[Cindori]

hold alt when booting

 

[mfka]

Not working, my screen just go black and after some time starts to boot windows!

 

[Infrared]

Not working, my screen just go black and after some time starts to boot windows!

The firmware isn't seeing anything on the SSD it can boot from. You need
to see what's on that SSD. The solution may be as simple as running the
'bless' command, or it may be more complicated. You won't know until you
take a look at that SSD. Boot from the OS X install disc, please, and verify
the filesystem.

 

[mfka]

Thanks for your help!

The thing is that MP refused to boot even when i removed windows 7 hard disk
and put Back up disk (Non SSD) in same place.

And solution was to connect keyboard in MP directly not in display. That way
boot commands worked.

I don't remember when i was scared like that last time.