Possible Duplicate:
How to remove Ubuntu from dual boot system with Windows 7?
Is it safe to uninstall Ubuntu from my Windows 7 computer? My default OS is now Ubuntu and can't change it to Windows 7.
I am just bored of Ubuntu which lowers my battery life quicker than Windows.
Best Answer
What I used to do when I wanted to uninstall Ubuntu from my dual-boot desktop was to delete the Linux partitions via disk management and then use a Windows 7 CD to restore MBR. You can find detailed step-by-step here.