Question PC suddenly turned off and won't boot up. EZ-debug led is stucked on CPU and the CPU fan is at full speed

[Bulzy]

hi all,

Specs
Ryzen 5 2600 (6 cores 12 threads 3.4MHz)
MSI B450M Bazooka Plus AMD board
Corsair Vengeance 16GB 3200MHz X 2 = 32GB RAM (brand new 2 years warranty remain)
Nvidia Geforce GTX 1650 4GB
Kingston NVME 240GB SSD
WD blue 1TB HDD
WD black 1TB HDD
NZXT 750W 80Plus Bronze (brand new 2 years warranty remain)

So i've been using my PC for almost 3 years now and recently upgraded my RAM and PSU. After upgrading PC worked fine for several months and like about 4 months ago PC suddenly turned off and tried re-boot. This has happened several occasions within short period of time. But sometime it was unable to boot up and EZ-debug light was stucked in CPU and CPU fan is at full speed. And it doesn't respond to power button as well and i have cut the power and restart again. When i restart again sometimes it boot up sometimes it again stucked with fan at full speed. But when it boot up it works fine for like 5 minutes and then turn of again sometimes i can go full day without any issue and even week if i can keep it in sleep mode instead of shutting down. and one day it never booted up so i bought the PC to the shop where i purchased the PSU and Ram kit. They kept it and checked for a full day. Did stressed test changed VGA card and all but the issue was never occured once.

So i bought the PC back home and tunred it on but the very next day the issue happened again. After that and until the day before yesterday the PC worked just fine. (That period is like 4 months). So now i'm having the same issue after 4 months. I manged it keep in sleep mode at night without shutting down and get my work done for like two days but when i turn it on today from sleep mode it happened again. And i tried like 10 times now and the PC wont boot.

Things that i tried:
Changed ram slots
Detached the VGA crad and re attached
Unplug and plugged all the power connectors
Remove and add SSD
Connected to direct power instead of UPS
Removed the CMOS battery and held the power button for 30Sec and re-placed the CMOS battery

Ps. At the time when i bought the PC to the shop 4 months ago they cleaned and replaced the thermal paste.

So finally let me know if you have any idea what this is and how to solve this. I really appreciate it. Sorry for my english as it is not my native tounge. And sorry for the long post

 

[Lutfij]

Welcome to the forums, newcomer!

MSI B450M Bazooka Plus AMD board
What BIOS version are you on for your motherboard?

But sometime it was unable to boot up and EZ-debug light was stucked in CPU and CPU fan is at full speed.
Might be a precursor to your BIOS being corrupt or your CPU saying goodbye.

They kept it and checked for a full day. Did stressed test changed VGA card and all but the issue was never occured once.
The difference between the shop and your abode is the source of power. I'd ask you to bring in a certified electrician and scope out the wiring in your abode. You might be having a grounding issue.

What PSU were you on prior to upgrading to the NZXT unit listed above?

Changed ram slots
Rams should be on slots A2 and B2.