Where did you get WIn? Did you burn it yourself? Has it been used to successfully install before? How do you plan to activate this install?
Windows 7 installer is a DVD, not CD. So to boot it you need a DVD or combo drive set first to boot in BIOS setup, or triggered by tapping the one-time BIOS Boot Menu key at bootup.
You will want to wipe, not format the HD first as formatting erases nothing including corruption or infection. Wiping with one set of zeroes using Diskpart is recommended once you can boot the DVD: SSD / HDD : Optimize for Windows Reinstallation
If you are still unable to boot the DVD using a DVD drive confirmed set first to boot, try another bootable DVD in it to see if the drive is faulty. If not then burn another DVD or check ISO source.
Next, try writing ISO to flash stick using Ultra ISO trial version: on File tab Open ISO, on Bootable tab Write Disk Image, Format, Write. Boot under USB or HD's, wipe HD, Install.
You can also try wiping the HD using free Partition Wizard bootable CD which will autostart. Once wiped the DVD should likewise autostart if it is readable. http://www.partitionwizard.com/download.html