bootmgr error

Please help! Replaced my damaged mobo with the exact same model after I bent the CPU pins. 😥 I now get the famous bootmgr is missing, blah blah blah error. Have unplugged all my hard drives except the ssd I have Windows 7 on. Have also tried a couple of different cables. No joy. I think I...

ASRock Fatal1ty X99X Killer Motherboard. i7-5960X Processor. Corsair Dominator Platinum DDR4-2400 64GB memory Kit (CMD64GX4M8A2400C14) Seasonic 1250 Watt PS BIOS is updated to latest, 2.10. i tested each memory stick seperately, and they all work. RAM slots C1 and C2 will not work. I have...