Hi. I recently updated my BIOS on a Gigabyte Z170X Gaming 7 with 16GB Vengeance LPX RAM. If you look at the Gigabyte website, the latest update is F21. Before I updated, I was running the F8 update. During that time I was able to turn on XMP without any problems. But after the update to F21, my PC simply wouldn't load with XMP enabled. Help please