I'm trying to fix my Lenovo thinkpad e460. Whenever I start the computer up, I get a black screen for a few minutes and then a message asking to insert windows installation disks, as "a required device is inaccessible". Since this computer has no optical drive, I've been trying to boot it with a flash drive. I've tried launching windows with a data stick using both ntsf and fat32 formats, and both by copying all the windows 7 recovery files over manually or by using the universal usb installer program, after disabling legacy bios and setting the bios so that the usb drive will have first boot priority. Each time I'm brought to a menu that lets me choose to launch windows from the USB drive, PCI LAN, or ATA HDD0, but selecting the USB HDD option only returns me to this menu. Selecting the other two causes the computer to return to the screen saying that "a required device is inaccessable".
My computer is under manufacturer's warranty, so I want to find out for sure if this is a hardware or software problem, but I'm not sure why it won't boot from the recovery disk. Do I need to change something else in the bios's, or is there anything else I can try to confirm what the problem is? Thanks in advance for any help provided.
Edited by gadolinium, 19 July 2017 - 05:45 PM.