Thanks for joining the Processor community.
This problem does not appear to be an issue with the graphics of your computer because, you are accessing the BIOS and you can actually see the beginning of windows setup. It seems to be an issue with the computer itself; it may be RAM, processor, motherboard or any other component on your computer.
I recommend contacting Lenovo for warranty service.
http://support.lenovo.com/us/en/preproductselect
Allan.