If it is a full retail version, it should work with the COA from the case. Try it again and at the first screen where it asks for Language, press SHIFT+F10 to bring up the cmd prompt.
Type the following bold items in the cmd window, ENT=press Enter key.
diskpart ENT A few seconds later the response will say "Diskpart".
sel dis ENT
The disks in the system will been displayed, look at the size listed to select the SSD for the next step, I will assume it is disk 0 (zero) for this example.
sel dis 0 ENT,The response will be "Disk 0 is the selected disk"
clean This will remove all data on the drive, including formatting.
create partition primary ENT, Diskpart succeeded in crating the partition.
list partition ENT This should show only one partiton, the just created.
format fs=ntfs quick ENT this will do a quick format, for a full format (I recommend) leave off the word quick.
active ENT, marks the new partition active.
Now you should be able to proceed with the install. This will not create the 100MB System Reserved partition.