Accidentally erase all partition

[sickRIG]

Please someone help me. I was trying to install kali linux on my laptop. I tough "guided partition" will install kali on different partition, but it's not. Kali wipe up my harddrive and I almost dead last night. And then I tried to install windows 7 but kali change the file system on my harddrive. So I delete the partition (what more can I do, I have nothing to lose anymore) and guess what? I still can't install windows 7 or XP or 8.1. My laptop is OS-less. Please help me, any help would be appreciated.

[jerseyIT92]

Do you have another computer? You can pop out your hard drive, plug it in with a USB to SATA cable, and format it to NTFS.