Need a format utility for my Dell Inspiron n5010

Warren_17

Commendable
Nov 10, 2016
4
0
1,510
Since my laptop was old and slowing down, I installed the Chromium OS. Now I need to install Win 7 to re-purpose the laptop. I have the install disc, but I get the error windows cannot be installed on this disk. The selected disk is of the GPT partition style and must be NTSF. I tried various menu items during the install and nothing seems to be able to address this issue. I appreciate any help or guidance. Thanks.