Is this my initial CPU that failed unexpectedly?
Is this my initial CPU that failed unexpectedly?
Hello, I'm struggling to grasp what's going on.
My main PC is a Ryzen 7 5800X. A friend gifted me an i5 12600K for free. I didn't mind the slower speed; I was planning to switch platforms after years with Ryzen (including the R5 2600 and all the upgrades).
My motherboard was a TUF Z690 DDR4, and everything was functioning properly.
I chose to purchase an mATX motherboard for DDR5, and after some research, I went with an Aorus board paired with G.Skill Trident Z 6400 CL32 RAM.
I replaced the motherboard and RAM, then restarted the PC using my friend's power supply and cooler (even an nvme one). It worked smoothly during the first boot, including the XMP profile and a quick Cinebench test.
Later, I installed a Thermalright plate for the LGA 1700 and swapped everything into my mATX "case" (Hydra Micro, open bench) with a fully functional EVGA 1000W G2 PSU.
The fan didn't activate, only the LED lights did!
I returned to the motherboard case with another PSU (CoolerMaster SFX 750W), but the issue persisted. I swapped the original Intel mount instead of the Thermaltake and even attempted booting without the cooler, since the CPU was extremely cold and there were no LEDs except for the RGB.
I assumed I was unlucky and that the Aorus board was damaged, so I bought an Asus mATX Strix-G. Now the fan works, but the behavior remains unchanged: RGB lights on, fan spinning at low speed, CPU cold, no POST (the motherboard box with the CoolerMaster SFX), and no debug LEDs.
Wow, let's try the old Z690 with DDR4 RAM again. That setup worked perfectly. The fan is on, RGB is active, but no POST (inside the old case).
So far, with three PSUs, two cases, and one motherboard box—whether or not a cooler is used—the system still doesn't boot. Did my CPU fail? Am I missing something obvious but repeating the same mistake? The PSU cables are all connected properly.
I've been assembling PCs for 20 years, using hard tubing and modifications. It seems all three motherboards might have bent pins.
Did you verify that all PSU cables were replaced and not substituted with those from another manufacturer?
every psu comes with its own cable... evga g2, coolermaster v850 and coolermaster sfx 750. all of them are fairly recent. evga is the most established, having been used for about two years.
the evga is currently powering my pc. the v850 was in a friend's setup and functioned perfectly with a 3070ti and the 12600k. the sfx was in an older build about a year ago and operated for three months before being stored until yesterday.
i haven't tested the new strix mobo on the evga, but i think it's unnecessary since i already have two other functioning psus.
p.s. i recently tried the v850 outside the case, with the motherboard inside the box, with or without a cpu, with one ram stick in, and without it. same result. i even placed a motherboard speaker on the header to listen for beeps, but there were none.
Generally, causing significant harm to a CPU is quite challenging. AMD processors are susceptible to damage if the pins are bent (AM4 and below, not AM5), which demands considerable force. Intel CPUs, however, are only at risk if the pins on the motherboard are bent. The recommended approach is first to test the CPU on a different motherboard to confirm it's the correct unit. Another step would be inspecting the CPU socket for any signs of damage.
as mentioned, the CPU ran smoothly on a TUF Z690 with DDR4 memory, but after swapping the motherboard to an AORUS B760M DDR5, it worked initially. After replacing the Intel platform with a ThermalRight one, the case was swapped, and it stopped booting. Then I switched back to the Intel platform, bought a new ASUS Strix-G B760M, but it didn't boot well. I also tried updating the BIOS on the Strix, but it failed completely. It seems there might be a faulty RAM causing only one boot, or perhaps the system is sensitive to certain configurations. The behavior with a single stick in a different slot also didn't help.
returned to the TUF Z690 DDR4 on a cardbox, identical to before. The main change was the CPU heating up slightly, though still well within safe limits without a cooler. (I’ve been using a cooler for about ten tries, but after that I stopped leaving it on to see if it got too hot, and the CPU stayed completely cool.) Also, I cleaned the contacts with cotton and isopropyl alcohol—nothing affected the CPU. The debug LEDs remain off, showing only the RGB lights on RAM, motherboard, and NVMe. Fans are still spinning.
If the RAM functions on another motherboard, it suggests a potential issue with the CPU socket. Make sure to inspect the pins for any deformation.
ram is working, i've tried another set of ddr5 with no luck... so test was done on a total of 2 set of ddr5 (16x2 corsair and 16x2 trident) on b760m and 1 set of ddr4 on z690 tuf.
regarding the bent pins, we're talking about 3 motherboards in total with the same behaviour... in the previous answer you can see the socket of the z690 ddr4 (where the cpu come from and worked flawlessy for months before this switch) there are no bent pins. And also the cpu looks fine.
i've never tried so many psu/mobo/ram combo in my life to fix a boot issue. how it's possible that the cpu went bad like that? the only thing i did was installing the thermalright plate for lga 1700 (in the aorus board, not in the strix that i'm trying right now)... and everything looked fine, it's a simple mod
🙄