Hi guys, My new laptop Lenovo G50-80 with free DOS and I wanted to install Windows 7 Pro 64bit by using USB pendrive. I can boot this pendrive in BIOS but when I go to Windows 7 installation >select language, time & currency & keyboard input method >Install now >Nvidia Geforce 880 Gt Driver Update. then it show: A required CD/DVD drive device driver is missing.

If you have a driver floppy disk, CD, DVD, or USB flash drive. Please insert it now. Install Yahoo Messenger Emoticons Pidgin English.

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And I can't found the pendrive drive if I browse it. Download Game Skateboard Pc Full Version. Below is the method I tried: • I tried to boot in Lenovo Z50 & Acer Aspire V15 Nitro laptop without any problem (These two laptop default is Windows 10). • tried USB2.0 and USB3.0 port • tried this but still no luck: Anyone have any idea how to solve it?