PC fails to update with two RAM modules following CPU installation.
PC fails to update with two RAM modules following CPU installation.
My system is a ready-made build, that’s the point. MOBO: AsRock H310CM-HG4 processor: i3-9100f RAM: 2x Team Group T-Force Vulcan 8GB DDR4 2666Mhz GPU: Nvidia GeForce GTX 1660 SUPER My power supply delivers 500W Previously, I upgraded from i3-9100f to i5-9400f. Once the new CPU arrived, I installed it and discovered it wouldn’t boot with the two RAM slots taken up. It only shows a display when one stick is present. I thought the i5 was faulty and affecting memory channels, so I returned it for a replacement, but even then the issue remained. After reverting to the i3-9100f, the PC booted perfectly with both sticks. I’ve tried: - Resetting CMOS - Testing various RAM setups (PC only boots with i5 in slot B1) - Using different RAM modules - Re-seating the CPU - Changing coolers - Updating BIOS
All the 9400fs were brand new. The issue is that both the first one I purchased and the replacement model also had the same problem, making it highly unlikely both had a dead memory controller.
BIOS version is 4.20. The socket looks good—no bent pins found. The computer starts up properly using two RAM modules if I revert to the i3 model.
Does the sound remind you of a faulty memory controller? Your Ryzen setup would likely trigger strange no-video shutdowns with specific RAM modules, especially when two are installed. Verify your RAM matches the board manufacturer's QVL. It’s possible the 9400F isn’t compatible with certain sticks, even though the 9100F is. Check out a tech YouTuber like Greg Salazar, who documents odd issues. He encountered a problem where the BIOS was outdated and lacked support, blocking processor recognition—fixing it by rolling back helped. Perhaps revert to an earlier BIOS version? ADDED: @stronbox, I saw something odd in the support list—your 9400F supports P0, R0, and U0 versions. It might not be one of those. Edited Jan 17, 2023 by An0maly_76 Updated with more details
I tried the first CPU with an older BIOS version during my troubleshooting, but it didn’t fix the issue. It seems the QVL didn’t include my RAM module, which is strange since they’re all from the same model. I couldn’t locate any details about whether the i5 is a P0, R0 or U0. Where can I find that information? I purchased it on Amazon, and it doesn’t appear in the product details.
I recall the 'SR00B' label on your i7-2600 was printed on the CPU cover. Many Intel processors follow this format, maybe it's similar? Added: @stronbox — discovered this page confirming production models were P0, R0, and U0. This hints at possible pre-production or prototype units. I understand you mentioned these chips were meant to be brand new, but things can get confusing. https://www.cpu-upgrade.com/CPUs/Intel/C...9400F.html Based on the odds, it seems ASRock might have misstated support for the 9400F. I also checked MSI; their information initially said your B450M Bazooka worked with a 5900X, but after purchasing it, they warned that a BIOS update could damage the board. Their site now lists no support for that model. Updated January 17, 2023 by An0maly_76 Revised, more details