I recently bought DELL Inspiron 7547 that came with Windows 8.1. I then decided to use Linux(dual boot) and installed Ubuntu 14.04 LTS (what a mistake!). After few days, grub failed to show Windows on the list of OSs. Since I haven't created the Windows recovery CD, I am stuck.
I have even tried to reinstall Ubuntu(the same version and 12.01) but now the bios doesn't show me the option of booting from USB. So, there is little that I can do.
Long story short, how do I get back to my Windows and remove Ubuntu with all its grab and what not from my machine?
P.S- I have searched for similar questions on this site and tried most of them for over a month now. But nothing works, and since my laptop doesn't accept CD, I install things using Bootable USB, CD based solutions won't help.
Thanks in advance!
EDIT (if this helps)
grep menuentry /boot/grub/grub.cfg | grep windows
returns nothing. If I just do grep menuentry /boot/grub/grub.cfg
I see only Ubuntu.