Re: GRUB error
If you deleted ubuntu and want to run only windows there are two ways to fix the MBR so you can boot right to windows without GRUB.
1. Boot the ubuntu Live CD, go to the desktop. Open a terminal and run
Ignore the warnings. This will install lilo to the Live CD session.
sudo apt-get install lilo
Next in terminal run
Reboot without the Live CD and you will boot right to windows provided you did not mess up windows prior to the above operation.
sudo lilo -M /dev/sda mbr
2. See here. Scroll down to the paragraph which is your version of windows.
Multi-boot: Arch linux, Ubuntu 12.04, Windows 7 & Windows 8