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What's DOS?
Posts: 1
Registered: ‎08-23-2015
Location: Haridwar
Views: 980
Message 1 of 2

Lenovo g 50 70 - Solution to Format my lenovo laptop

Hii i just purchased my lenovo g 50 70 422418 with dos based but i cant get any screen to format my lappy with window 8.1 an error occured ipv 40 like this please resolve or give me solution as soon as possible.



Mod's Edit: System model added to Subject line to improve visibility / clarity

Retired Support Specialist
Posts: 4,447
Registered: ‎04-22-2013
Location: Philippines
Views: 947
Message 2 of 2

Re: Lenovo g 50 70 - Solution to Format my lenovo laptop

Hi Munendra06,


Welcome to Lenovo Community Forums!


If you're trying to load a bootable CD or USB , Here's is what you need to do.


1. Boot into the BIOS and set the following settings:


Exit Tab:

OS Optimized Defaults = Win7 OS


When finished, hit Load default settings (just right above it) then set these additional settings:


Security Tab:

Secure Boot = Disabled


Boot Tab:

Boot Mode = Legacy

Boot Priority = Legacy First


Plug in now your USB or Put your CD in


2. When finished, hit Fn+F10 to save and exit.

3. Restart the computer and start tapping F12 to pull up the boot menu, There you can select the CD/DVD or USB.


This should let you select Legacy devices

Hope this helps


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