What happened is this: Basically, I was running Windows 10 on Acer Predator G9-791 and I sort of played around in BIOS.
When I have changed the boot mode from UEFI to Legacy and restarted the laptop, I could only see a somewhat smaller logo on boot that says "(Acer Predator image) Predator", but nothing happens after that.
That would not be a problem if I could just switch the boot mode back to UEFI, the problem is, that after this change to Legacy I can no longer access BIOS with F2, I tried using different keys (del, esc, f1-12) but that didn't work either, please help, what should I do?
EDIT: When I removed SSD with windows, it booted to some sort of terminal or something and it keeps saying:
Intel UNDI, PXE-2.0 (build 083) Copyright (C) 1997-2000 Intel Corporation.
For Qualcomm Athernos PCIE Ethernet Controller v18.104.22.168(03/15/13).
Check the connection! PXE-M0F: Exiting PXE ROM. No bootable
device -- insert boot disk and press any key