|That's a weird one. I'm not sure I have an answer.|
What caused you to do the initial 'System Recovery'? Was it this blank screen problem?
When you do the System Recovery the system is rebooted, right? And it's ok after that reboot, right?
Check the Device Manager for any problems and make a note of the Display Adapter that is being used.
Is the graphics adapter a card or built-in the motherboard?
If it was me I would try a different monitor and/or a different graphics card (if it is a card).
To me it sounds like during the boot the system either is not picking the right driver. But I have no idea why that should be the case.
I'd like to have you try a test, if you would. Could you go to the Device Manager, uninstall the display adapter and try a reboot.
I'm kinda grasping at straws.
Is saving all your data and doing a Destructive System Recovery out of the question?