What Firmware do you use?
If you dont have a working blu-ray drive, then install a BD bypassed firmware (you can make your own with PS3MFW Builder)
some other suggestions you could do (google fu

)
Originally posted by another user
but I just suggest you following things.
1. if you can go format hard to first format hard.
2. go to OFW 3.55
3. Install Kmeaw 3.55
and do install Lvl 2 and fix permission for kmeaw .
Originally posted by another user
I have the same problem my BD board is broken, wont even move the laser anymore.
I suggest to try thigs above if that wont work check if the bd drive wires are in position.
Originally posted by another user
I'll try to take it apart and check the connections, and get back with the results.
EDIT: Turns out the ribbon cable on the bottom of the BD Drive wasn't even plugged in... Plugged it back in & problem solved. Thanks for the help.
If you have a new blu-ray drive, you have to 'remarry' it to your console. A tutorial can be found here:
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Good luck and I hope you get it fixed.