Hello everyone!
I am facing a Problem which 2 IT students couldnt figure out in about 10 hours of troubleshooting. I got myself a 3 New fans for the Front of my PC Case (Dark Base Pro 900). After installing them, my SSD started acting up and i thought it was just a cable error and checked the cables, was all good. SSD had my OS installed and just wouldnt boot. "please select a proper boot device and reboot". So i thought maybe my Windows just randomly got screwed up and reinstalled Windows. SSD booted up like 2 times into windows and then suddenly stopped again, so same procedure. nothing. I tried different HDDs and SSDs, it was booting flawless with them. I thought maybe it was bad luck and my SSD just died. So i went ahead and bought myself a M.2. Installed windows and all good. (my main SSD was still working btw, but just not booting into windows. Couldnt figure out why.) After installing the M.2 and Windows, etc. i started reconnecting my HDDs and SSDs. This is where things got real messed up. 2 Hard drives showing when booting, reboot, only 1, reboot again - none. We were unpluging and repluging cables for about 5 hours trying to figure out if a Hard drive, a SATA cable, or a PSU cable died. All cables are working just fine and so do the Harddrives. So we started installing one Hard drive and boot, then 2 and boot, then 3. etc. It stops working when i connect 2 HDDs at the same time. All SSDs + 1 HDD works, but 0 SSDs and 2 HDDs don't. i really cant tell if its the HDDs, the Mainboard or Windows. We basically tried everything and no result. It was working just fine and the it suddenly stopped. I really hope someone could help me out in here. Thanks in advance.
My Specs:
i7 6700K
MSI Gaming Pro Carbon Z270
MSI GTX 1070
16 GB DDR4 Trident Z Ram
750W Corsair PSU.