First I have to test the clients boot USB on another PC. I've lost track of how many times the USB, DVD, CD or such has failed and they are chasing the wrong duck.
After I'm sure it boots on a shop dog I reset the laptop using this very safe method. Power out, pull battery, press and hold the power button for 60 seconds, release, slip in the battery, apply power and try again.
Some BIOS's are really tough to get into. As I don't own your model and am not there I can't write much more than it can be a challenge. Sometimes you just have to have it looked at by others.
Hi. I have to log into a system using a dongle with linux, which over the last 9 months i use by going into my bios, changing "os mode selction" to "UEFI & Legacy", and then also changing PXE OPROM, from disabled to enabled. I tried this yesterday and think i mistakenly touched f9, now PXE OPROM cannot be selected so i cannot now change from disabled to enabled, so my usb drive will nolonger boot.
Have already tried Samsung support and they cannot help.
Really appreciate any help.
Full model ref: NP350V5C-A06UK
Running win 8.1

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