How I can boot my laptop with no OS?

asdfffff

Estimable
Sep 19, 2015
1
0
4,510
Edit: Figured it out, had to change one setting in bios. Cant find a delete option for this thread so it would be nice if a mod could delete this for me.

Hi, I bought a toshiba satellite z30-b-10c with windows 8.1 and wanted to remove it and install windows 7 instead. So I got the windows 7 to my usb flash drive using this guide: http://pcsupport.about.com/od/windows7/a/install-windows-7-usb.htm
After this I tried to boot the laptop from usb and I thought it worked fine when it asked me to format my hard drive first, but after I did that the computer just shut down and the win 7 setup didnt start so I managed to screw up pretty big time. Now I have no OS and when I boot the computer it just says "Insert system disk in drive. Press any key when ready..." And when I press any key, it just boots again and goes back to this same screen. And as I have no disc drive in this laptop, I'm pretty screwed I guess. So is there anyway for me to boot this computer from my usb flash drive?
 

Betty_1

Estimable
Sep 28, 2015
1
0
4,510