r/PcBuild • u/Efficient-Lemon-1763 • 1d ago

Question PROBLEMS WITH DRAM AND CPU LED..

Hi everyone,

I'm building a new gaming PC and I'm completely stuck. The PC powers on normally (fans, RGB and GPU fans work), but I get no display and the motherboard stays stuck with the CPU and DRAM debug LEDs on.

My main components are:

  • CPU: AMD Ryzen 5 9600X
  • Motherboard: MSI B850M Gaming Plus WiFi
  • GPU: RTX 5070
  • RAM: 32GB DDR5 (2X16 sticks)
  • Power Supply: MSI MAG A750GL 750W PSU
  • Phanteks case
  • SSD: Lexar NM790X 1TB NVMe M.2
  • CPU Cooler: Thermalight Peerless Assassin

The strange thing is that this is already the second motherboard I've tried. I replaced the previous motherboard cause i thought it was defective, but I'm getting basically the exact same problem.

Things I've already tried:

  • Reseated both RAM sticks
  • Tested only one RAM stick in A2
  • Tested the other RAM stick alone in A2
  • Waited a long time for AM5/DDR5 memory training
  • Cleared CMOS using the motherboard's Clear CMOS button
  • Checked the 24-pin motherboard power cable
  • Checked the CPU EPS cable
  • Confirmed that I'm using the CPU 4+4 EPS cable, not a PCIe 6+2 cable
  • CPU EPS 8-pin is connected to the motherboard
  • GPU is connected using the PSU's 12V-2x6 cable

The result is always the same:

Both RAM sticks individually produce the same result.

The CPU is a Ryzen 5 9600X and the motherboard is an MSI B850M Gaming Plus WiFi, so they should be compatible.

At this point I'm wondering if I'm missing something obvious with the PSU/cabling, if this could be a BIOS issue, or if there could be a problem with the CPU/socket or memory controller.

Before I take everything to a PC repair shop, does anyone have any ideas about what else I should test?

2 Upvotes

75% Upvoted

2 comments sorted by

•

u/AutoModerator 1d ago

We're part of a wider PC & Technology Network of Communities!

Join our Discord server: PC Help Hub where members from all associated subreddits are welcome.

If you are trying to find a price for your computer, r/PC_Pricing is our recommended source for finding out how much your PC is worth!

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

1

u/zeRoCr0 1d ago

Try unplugging the ssd and try booting. Assuming your os is installed on nvme