Hey, I just recovered/reflashed my bios today. And I wanted to elaborate on the process for future users.
Here are the steps:
1. Get a BIOS file. Here is a link https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Y50-Bios-3-03-problem/td-p/2178818
The third post down has different versions...