[MrPerson]

I Recently bought a new computer from Ebay that has Ubuntu Installed on it which I did not want. I have the disk version of windows 8 professional 32/64 bit. when I tell windows to install to the computer, all the available hard drives say that windows cannot be installed to. I think one said it was not the right partition or the hard drive was in wrong format. I have installed OS's before and all I had to do was put in the disk and tell it to install and it did it fine, I dont know what to do now. I even took an old hard drive that used to have windows XP on it but was wiped and put it in the new computer but the windows 8 install disk still says it cant install there. I could really use my help since the computer is basically useless to me without windows, and I have no interest in keeping ubuntu, I only want windows 8 64 bit installed, thanks