I can follow the keys through f12 (boot device), but what does "f5 etc." do, and what exactly is"nothing happens".
I'd reinstall Windows 10 from the disk or stick you make with the Windows Media Creator.
Kees
I have windows 10 installed on my laptop which I can't log in to because of error "logonui. Exe application error the instruction at 0x00000006fb7a5e0 referenced memory at 0x0000000eddb14e8 the memory could not be read". I can't open safe mode or bios or boot device selection menu. There is no option to do anything. I have tried f8,f2[bios],f12[boot device] f5 etc but nothing happens. Please help.

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