MkRider

Nope, it did not. It just happened while watching movie and suddenly blue screen with bunch of text appeared and after that it showed the same Atheros PCIE Ethernet Controller message. Now will try the suggestions you mentioned above and will continue updating this thread if the problem will go away. Thanks

Hey @sirana, thanks for getting back here with the simple pictured explanation of what maybe happening. What i did so far is reset the BIOS settings and the problem hast appear so far. If that doesn't help too, the problem will appear and will try your suggestion. Thanks Edit: Btw, here are my default settings on the boot menu:

Hey there, Lenovo Y510p suddenly does this: Intel UNDI, PXE-2.0 (build 083) Copyright (C) 1997-2000 Intel Corporation For Atheros PCIE Ethernet Controller v2.1.1.2(09/06/12) Check cable connection! PXE-MOF: Exiting Intel PXE ROM. No bootable device -- insert boot disk and press any key - Regarding why may this happening, i was reading online some suggestions and people reporting things but non of that happened. I didn't dropped the lap top, I am not trying to do fresh Windows 7 installation, I don't have external HDD attached to the lp altho i have one using from time to time, improper bios settings but never touched BIOS so far. It started doing this few days before and last time did it was before i write this here. Someone mentioned it's a dying laptop, some motherboard issue etc Help Thanks

Hey there, I was about to mod the BIOS, current version (LENOVO 74CN47WW(V3.08)1/30/2015) and found this thread. @svl7 said if one have newer version than V3.05 he need a copy of it in order to make it work for the system. Can you help? Thanks