My friends daughter has an acer aspire v5 571 running windows 8 with phoenix bios running uefi boot. She has changed, then forgotten administrator password. Normally i would boot from a password reset disk and blank the password works fine with win 7 but with the UEFI it wont boot from anything other than windows boot manager. I have changed the boot order in bios to put usb or cd rom first and i have tried both a cd and a usb stick to boot from but as long as UEFI is enabled it wont boot from them. If I select Legacy instead, it will boot from either and boot into the linux enviroment and run up to the point where it is looking for a windows partition to load a file from to blank the password, it sees the 500Mb disk but doesnt recognise it as a windows partition. I also tried Alt plus F10 to enter the restore partition to replace win 8 with a fresh version but both with UEFI or Legacy modes it doesnt boot to this nothing happens. Lastly I tried logging onto microsoft account from another PC and managed to reset password via email but now it says to make sure laptop is online when it boots but it doesnt have an ethernet port so have now run out of ideas. Any help appreciated !