z87 pro4

I picked up a used ASUS Z87 Pro and put in my confirmed working i5-4690K, but cannot get it to post. The red CPU led is lit, but I know the CPU is fine. Other details: No bent pins or visible damage to board (it is in very good shape / clean) I tried multiple PSUs, swapped memory, etc. Q Code...

Hi, Which is the best for 1155LGA? 1. GA-Q77M-D2H http://www.gigabyte.com/products/product-page.aspx?pid=4237&kw=GA-Q77M-D2H1.0#ov 2. GA-Z87MX-D3H http://www.gigabyte.com/products/product-page.aspx?pid=4490#ov 3. MSI Z77A-G45 What are the differences between them? Thanks.