I updated my MSI PRO z490-A BIOS. I built this PC back in May and has been working fine with no issue. The BIOS update the other day went normally then rebooted. After reboot I got nothing. Blank screen. After messing around with it for a few days I got it to work again by only putting in 2 of the 8 GB memory sticks. One in A2 and the other in B2. If I tried to put the other 2 in I get the blank screen again. I don't understand what is happening. I haven't opened the case since I built it and made no other changes other than that flashing of the BIOS. Why won't it recognize the other memory sticks anymore?