I started a replacement build for the observatory and using a new B250-HD3 MB I had as a replacement. The CPU is an i7-6700K, an Intel 660p 1 TB M2 drive, and 16GBs RAM (G.Skill F4-3600C16D-16GVKC). Using a video card on hand which displays my monitor well.Issue is it won't boot from the Windows 10 DVD or USB. It asks to boot from drive and after hitting any key just sits there doing nothing. The cursor goes to the upper left and just blinks. No activity. BIOS shows all installed components. Suggestions? RAM in slots 1 & 3.