how can i install OS from pendrive?

[Aneez]

i just want to get clear advices from you for installing a new OS....i know many of them knows answer so could you help me?

 

[Axedavid201]

What you need to do to install windows from a flash drive is, download the windows ISO (If you have a legitimate copy use that) and install the ISO onto a usb drive using Rufus.