Some time ago I installed Ubuntu (14th version) on my laptop along with Windows 8.1 using a bootable CD drive. But now I wanted to remove Ubuntu and so I deleted the partitions that I created for Ubuntu. Now I have to repair Windows boot but I do not have that CD drive from which I installed Ubuntu. Is there any way to repair the boot without original installation drive? Can I create another bootable drive and repair Windows boot from that.
P.S. - The Ubuntu installation process didn't go well. After I installed it alongside windows, whenever I used to start the laptop, I would get a grub screen and I have to type exit in order to go to the screen where it shows the OS choices. There were sometimes mounting problems in Ubuntu.