CD\DVD or usb option missing in BIOS setting

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Prasad07

New Member
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Hi
I am using Lenovo B40-30 laptop with Preinstalled windows 8.1 pro. but i wont to install windows 7 on it when i enter on Insydeh20 BIOS Utility setup there were two option like UEFI and legacy mode but both does not have CD\DVD or usb option to boot from.

My bios and drivers are all up to date.

Please help me guyz
 

My Computer

System One

  • OS
    Windows 8.1 Pro
My computer's UEFI/BIOS combo will not add a usb or cd\dvd option into the boot menu until I place a usb boot stick into any usb port, and/or any cd\dvd boot into the internal cd\dvd drive [or, into the external cd\dvd drive]. I suspect your UEFI/BIOS combo acts the same way. I think anything that can be read can be inserted into usb port and/or cd-dvd drive to set UEFI/BIOS.
 

My Computer

System One

  • OS
    Windows 7 Pro 64bit [MS blue-disk set]
    Computer type
    PC/Desktop
    System Manufacturer/Model
    2 Acers & 1 Antec[?]
    CPU
    i7 in 2 Acers, i5 in desktop
    Motherboard
    Desktop w/Gigabyte
    Memory
    Two w/16GB, 1 w/8GB
    Graphics Card(s)
    Laptops GameWorthy; Desktop maybe GameWorthy
    Monitor(s) Displays
    flatscreens; 2 are BluRay worthy
    Screen Resolution
    1368x768; 1600x900
    Hard Drives
    1TB internals; 2 ext usb WD 1TB HDs
    PSU
    what's PSU?
    Cooling
    Regular plus external fans
    Keyboard
    desktio w/PS2
    Mouse
    desktop w/PS2
    Internet Speed
    DSL middle level [160?]
    Browser
    from Netscape 0.9 to FF 36
    Antivirus
    well-balanced, well-configured mult-layered defense is best
    Other Info
    From MS-DOS 3.3, MS-DOS 6.22, from Windows 3.1 to WFW 3.11 to Windows 95-98SE, now to Windows 7 Pro.
    Security for now: Windows 7 Firewall, Emsisoft AM, MSE [scan-only], SpywareBlaster, Ruiware/BillP combine
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