Question MSI PRO z490-A BIOS update problem

Oct 9, 2021
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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?
 
Oct 9, 2021
2
0
10
0
full system spec?
turn on xmp profile?
MSI PRO z490-A
Intel i9-10900K 3.70GHz
Patriot Viper Steel (4 x 8GB) 288-Pin SDRAM DDR4 4400
SAMSUNG 970 EVO Plus SSD 2TB - M.2
MSI Gaming GeForce GTX 1650 4 GB
CORSAIR RM1000X 1000W Power Supply
Noctua NH-U12S CPU Cooler

Haven't turned on XMP Profile.
 

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