Originally Posted by skiet078
how Windows 7 - MBR provide solution
Most instructions for fixing the Windows MBR assume you can't boot into Windows, because if you can boot into Windows why would you need to fix the MBR.
You have the unusual case (from Microsoft's viewpoint) that until you delete Linux, you can boot Windows. So you want to fix the MBR to be able to continue to boot Windows after deleting Linux.
If you have a Windows CD, maybe it is easier to just follow the typical fixMBR instructions such as yancek linked.
If you don't have a Windows CD, there are ways to fix the MBR from inside Windows without a CD. But I don't have a link to any of those instructions.
you fix the MBR, it is very easy in the Windows disk management tool to delete the non Windows partition(s) and reuse that disk space for something else.
Originally Posted by salemeni
Try to boot with gparted live CD and delete ubuntu partitions.
Bad idea. People answering in this forum know more about using Linux tools to repartition than about using Windows tools for the same job. But for this situation, non expert use of Linux tools to remove Linux will most likely result in a non bootable computer. This job should be done with Windows tools. It is easy with Windows tools if you know how. I've only done this with XP. It is no harder (probably easier) with Windows 7, but different.