Yoga 2 Pro, black screen

Hi,

After making some changes to my bios settings my yoga won't turn on, the keyboard lights up but the screen won't turn on. I don't believe it is a hardware problem so I assume it must be bios related.

Since then I've built a SPI programmer and I've cloned the flash chip, would it be possible to rule out any hardware problems by analyzing the bios dump? Can I flash a new bios from Lenovo using a SPI programmer?

Please let me know if you have any advices.

Thank you.