Solve installation problem

[12harshpatel]

I formated my c drive before window installation and now I can't install Window it shows you can only install on gpt disks.

 

[robax91]

https://www.youtube.com/watch?v=aJCkI14Lcd4

Around 8:35 is what your looking for. Select delete for every existing partition, then select new to create a partition for windows using the unallocated storage.
You can watch the whole video if you're getting stuck at a different portion of the install.