New build - CPU and RAM issues reported
New build - CPU and RAM issues reported
I recently assembled a new PC. It’s not my first build, but it’s been a while since my last complete setup.
My components are:
CPU: AMD Ryzen 7 7800X3D 8x 4.20GHz So.AM5 WOF
Memory: MSI MPG B650 Edge WIFI DDR5-5600 DIMM CL40-40-40
RAM: 64GB (2x 32GB) Kingston FURY Beast DDR5-5600 DIMM CL40-40-40
Power Supply: 850 Watt MSI MPG A850GF Modular 80+ Gold
Other parts: Cooler – Alpenföhn Gletscherwasser 240 High Speed
Case: be quiet! Pure Base 600
The GPU has remained inside the case since the Ryzen included its own integrated graphics.
After initial assembly, I pressed the power button and noticed only the cooler was active. The mainboard displayed four EZ debug LEDs; both RAM and CPU were showing a failure indicator—a constant light that persisted without changing. The display stayed black.
I verified all cable connections (ATX, two CPU cables, and the AIO fan cable) were correct.
Checked RAM and CPU placement—everything was in order (just a bit too much thermal paste applied, but it didn’t affect performance).
I tested various RAM configurations—both A2 and B2 slots, one slot per type, no improvement.
After disassembling everything and reconnecting from scratch, there was still no change.
I also updated the BIOS to version 7E10v17 from MSI. The flashing completed successfully; after five minutes a white blinking LED turned off and the system rebooted. The EZ LEDs remained unchanged.
Currently, I’m uncertain about the issue. The only possibilities are a faulty motherboard (possibly from factory or due to static damage) or defective RAM on both sides. Since the power supply is adequate and the motherboard is receiving power, the ATX unit should be fine. I’ve connected both 8-pin CPU power cables and several PSU outlets, so that doesn’t seem likely.
The CPU socket and chip appear clean with no bent pins; alignment is correct. The resistance when closing the latch was slightly higher than with older PGA systems, but that seems acceptable.
Anyone with alternative suggestions or ideas would be appreciated.
Thanks
I've linked the CPU fan cable for the AIO, but did you also connect the pump motor? If the motherboard fails to recognize a pump on the correct header, nothing will occur.
Using a compatible air cooler is recommended—it simplifies the setup.
If you've activated XMP 5600MT/s in the RAM settings, turn it off temporarily.
Connected the cables following the diagram in the AiO instructions, which also references the CPU fan connection. I've included the case fan header as well. The AiO is functioning properly. I plan to attempt it again using an air cooler from a previous build just to see if it helps. It would be helpful to experiment with various settings, though the system still won't boot into BIOS.
It looks like the guidance provided by Alpenföhn might have been wrong, especially with this MB. After switching the cooler cable from "CPU Fan" to "Pump Fan," the system is now booting properly. I’m hoping this change will continue to work once everything is reassembled. Thanks for your help!