Question DRAM light CPU light reboot loop on a new AM5 build

[Picanha0]

So finaly I decide to build a full new setup:
Ryzen 5 7600
Noctua 140mm NH-U14S
Radeon RX 6750 XT
Ssd samsung 980 PRO NVMe
Corsair vengence ddr5 2x16 5600
Mobo msi b650 mag mortar That I swaped for a asis TUF b650 plus
Psu XPG cybercore 1000W platinum

Built the pc, installed windows, and all the necessary stuff. Than the pc started to get unstable to the point it wont boot, was traped in the dram then cpu light and restart loop, but was able to enter the bios and sometimes it would boot, during tinkering it got even more unstable, to the point of losing access to bios.

I tested everything, then I swaped the mobo, in the process I got 2 bent pins, I dont know how, so they dont gave me a refund, at this point I installed the asus B650 plus. Well the nightmare continued, bios updated lots of additional tests and tinkering until I came to the conclusion it was the processor, they gave me a new one. More than 30 days of testing prior to that.

Intalled the CPU on friday, enjoyed the weekend with my new setup, the only config change I did was to set the ram to 5600 on the ai twek on bios (directely on the setings not using DCOP, dumb, but was working, did that becouse I didnt know that XMP for amd is calle DCOP).

Now on monday, pc wont BOOT WTF???? DRAM, CPU light loop, but I can acess bios.

I dont know what to do….

Tryed to reset the CMOS shorting the cmos reset pins, checked if bios is up to date (it is), checked the RAM in diferent slots, they only work in prefered position (2 and 4, or only 2 or only 4), when only 1-3 or 1 or 3 is populated I get a solid DRAM light, no bios access. All the other parts were extensively tested.

The strange part is that it worked fine for the weekend, tryed run several games while checking for temperatures, the only strangish event was my ram sometimes reaching almost 70 oC, but I read thas ok for DDR5.

Now some hypotesis:
-did the faulty cpu fryed the mobo parcialy? And now isnt working properly with new processor?
-did my wrong setup of the memory broke it?
-did the faulty cpu, damaged the mobo, and the mobo damaged my new cpu?
-configuration or assembly mistakes?

Posting this from my phone, last sad fact…

 

[Lutfij]

Welcome to the forums, newcomer!

Ideally the rams should be on slots A2 and B2. As for the processor, you could try and power the entire platform without the discrete GPU, see if you get POST and display. I'd also try and relieve some stress of the cooler, with a couple of turns of the screws in an anticlockwise motion.

 

[Picanha0]

UPDATE: took the power cord of for the night, the next day I pluged and it booted, ran some tests (cpuz, afterburner),all smooth. Turn off, with the cord pluged, came back from work and it wont boot, same problem, dram, then cpu light, restart loop. Even got mu hands on other pair of ddr5 to test, same problem.

 

[Picanha0]

UPDATE: Tryed everything, cooler and memory wise, losen the screws of the noctua in multiple steps, trying to boot every half turn until I removed it, I checked the processor and the pins. Had a burn mark, from the previously fauly Ryzen 7600. Pictures in the imagur link below:

https://imgur.com/a/EsSEJDN

View: https://imgur.com/a/EsSEJDN


Then I installed with the stock cooler and it post first time. Great! will do more testing during the weekend.

Now the questions.

-Removing and reinstaling the CPU have something to do it with being able to post? When I swaped the RAMs it post too, is there a diferent POST path when you change the hardware installed?

-I tryed to install the stock cooler because it stoped POSTing when I moved the cabinet, from laying down to its regular position. Whats happening here? Also as a note what a huge project failure from noctua if thats was the issue after I installed the new CPU, its screws should sit "north and south", instead of "east and west" with the cabinet in its designed position.

-Can the faulty CPU make a burn mark on one of the pins without losing function?


...
Well if everything prove to work, I will close the topic and move on, will use the stock cooler and call it the day.