Need help with reformation

[Canvas]

Hi everyone, Im having problem with reformating. I was using window xp previously and I accidentally reformat my c drive with window 7 without deleting my c drive before refomating

Now I have got window 7 installed as well as window xp in my c drive and I tried to reformat again and I couldn't and it just stuck in dos window. I'm using USB port for reformatting as the window 7 software is in it and whenever I boot from the USB it just stuck in dos window stating "Starting to boot from USB drive*****" and just couldn't load into setup window of window 7. I appreciate lots if there's help from you guys

Edit//// and I tried to format in prompt command, but it doesn't allow partition drive to format

 

[torrentg]

Hi.

Boot to the Windows 7 DVD. When you go to install, you can format then when it shows you drive options. Click advanced.

 

[Canvas]

I'll try that! Thank you! Appreciated lots