Windows 10 download

After installing the windows 10 through boot camp assistant, on my desktop "CCOMA_X64FRE_EN-US_DV9." is shown. I never went through the whole sign in and making a windows account, nor when I press restart and hold the option key can I choose between the windows or the mac, I only have the mac as an option. I tried to delete the CCOMA..... but it doesn't work. What went wrong when I tried to install the Windows 10.