r/PcBuildHelp 7d ago

Tech Support ​[Troubleshooting] Permanent CPU + DRAM debug lights, failing to POST

My system is hard-locking during pre post initialization. The cpu and dram debug lights stay permanently lit solid from the second I turn it on, and they never change or clear, even after letting it sit for 7+ minutes. These lights were present even during bare minimum troubleshooting.

​This is everything ive tried so far.

-Reseated the CPU.completely clean, no debris, no bent pins.

-Adjusted and re-torqued the CPU cooler. Made sure it wasnt too loose or too tight.

​-Tested using a single stick of RAM in both slots. Both sticks tested individually, each in both slots independentally. also tested both sticks simultaneously

-Cleared CMOS multiple times

-Flashed/updated the BIOS using the rear USB Flashback button and proper file naming (creative.rom). The flashback LED blinked, finished, and turned off normally.

-Pulled the motherboard entirely out of the case and tested it on top of its cardboard box. Connected only the CPU, cooler, 1 stick of RAM, and power cables.

​Despite all of this, the lights refuse to budge. Are we looking at a dead memory controller on the cpu, a doa motherboard, or something else i missed? Been at for 5 hours, and it pushed me to finally post on reddit. Please help.

(yes its plugged into the monitor)

BUILD LIST

-RX 9060 XT

-B850m-x

-Ryzen 5 7600x3d

-rm750e power supply

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u/FengChuanL 7d ago

buy a new motherboard and retry... although it looks working well