i3570

I bought a Core i5 3570 (HD 2500) by mistake (Didn't look for its 'K') and installed on a Gigabyte GA-B75M-D3H, Is there any posibility to install Mountain Lion without a graphics card, Please help....Is i need to go back to windows.>>????????? Specs CPU :- i5 3570 MB :- GA-B75M-D3H RAM : -...