[SOLVED] Windows 7 installation problem

[White Widow]

Hi
I purchased a new delll inspiron laptop without the windows. It had ubuntu installed on it. When I try to install windows 7 it says windows cannot be installed as selected disk is of the GPT partition style. Any idea how to fix this issue easily?

Thanks

 

[wmughal]

U tried formating the drive?

 

[White Widow]

Worked after removing all partitions