I have an stix rog z270e, new case, put everything in it and now 2 hard drives are not showing upI have ran diskmgmt.msc and they are not listed. I have checked the hdds to make sure they are getting power and have a sata cable,, everything looks go...

computer takes awhile to boot, I'm using a samsung ssd.So I installed a new bios, went with default settings, and the computer stats on the " press f2 to enter bios mode screen" for a good 45 seconds.What do you suggest?

As the title says. I am rather new. I was able to read a guide that really talked about overclocking the cpu. I have my i5 6700k at 4.8ghz on air right now, stress tested and it post.In my asus z280 mobo there is a lot of options that go over my head...