When I turn on my Lenovo Thinkpad, it says PCI LAN: IBA GE Slot

by default booting start thru iba ge slot 00c8 v1403 iba xe slot 3 BRCM MBA Slot 0601 1 PXE NonPolicyTarget 4 IBA GE Slot 0400 v1553 PXE NonPolicyTarget 5 IBA GE Slot 0401 v1553 PXE NonPolicyTarget I iba slot This IBA GE SLOT 00C8 V1327 is the mechanism for booting via the network So, the solution was to look at the BIOS menu for Bootable devices,

iba ge slot 00c8 v1550 IBA GE Slot 00C8 v1365 PXE B SMBIOS Version Operating System Microsoft Windows 10 Pro Version 1809 OS Build 17763