Hello people I stumbled onto this forum whilst searching for information on my Lenovo p510.
It appears to have bricked itself.
Serial Number
MJ060PTL
Machine Type Model
30B5002EUS​

I was in the BIOS settings and a change in a parameter (I forget what) took a long time to commit. I used esc key and backed out and my SATA drives al disappeared from the list of devices and the order changed to default boot order. Rebooted and only NIC boot process endlessly looping.

Now its stone dead no beeps. No power to gpu just case fans and cpu cooler...