I am very new to Ubuntu, i started using Ubuntu just two months ago and it's been really awesome until last night when an annoying problem came up, Ubuntu graphics fails when booting, sometimes comes with a blank screen and just leave me hanging without a blinking cursor. Trying to re-install Ubuntu, i accidentally deleted Windows 8.1 and all partitions with windows recovery area all gone. I really would love to keep my windows OS while running more of my everyday tasks on Ubuntu. Lost data on windows are safe in cloud, i just want to have my Windows 8 back as dual boot option while Ubuntu does all my tasks. Is there any way i can re-install or recover Windows without buying a new Installation CD? Would a trial windows version automatically extend the key? The warranty on the laptop is expired, Would Lenovo help desk provide me with a new Windows license key? I am stuck and need all kinds of help to make this trouble go away. Please help!
I use a Lenovo G580, 500 Gigs i-7 processor, 8 gigs RAM with pre-installed windows 8.