Windows 7 Instalation CD error

i tired wipeing the sdds and i have 4 disks and it says there is no free space or used space says no media

Unplug all but one drive and all peripherals.

If the previous steps don't work, boot free Partition Wizard
bootable CD to see if it shows the drive(s). Post back a camera snap if you can.

Create a Primary NTFS partition on your target drive and mark it Active, then try install.

how do i unplug a drive and what are peripherals

The opposite way from how you installed it. Be sure to power down first.

ok so the drive is now physically out

do i power on without it?

Remove all of the HD's except the one you want to install upon.

Then try install. Report back exact error message text and when it occurs: Clean Install Windows 7

If this fails, reset the BIOS to defaults, set SATA controller to AHCI to try install, then IDE if it fails.

Then work through the other steps given including creating a Primary Active partition with PW CD.

how would i select just a single hard drive cause mine is in 2 partions it automaticaly does that when i bought my new hard drive it was blank then after i checked it it was put into 2

I was just given this error it was at 9:46 and it was at 6%

Just tried it again and after clicking continue it said this and a cd is already in their also when I went to browse for one I found this