Question My system does not post after 2 month of working fine

Feb 9, 2024
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Hi yesterday i tried to boot up pc but suddenly figured out my pc doesnt boot up (after 2 month)
Those argb light on MOBO is lit after plugging my pc into the outlet but switch button is not doing any good.
I tried almost anything on internet. No peripherals, no fan, nothing. After many attempt of trying to get it fixed, i just swithched to test everything if its fine.

So im starting off from the begining:
1. Unplugged all the peripherals and monitor (no go)
2. Took out all fans and aio, trying to figure out if it post with ram argb ( no go)
3. Took out ssd ( no go)
4. Tried to unplug and replug cpu and main 24 pin cable (no go)
5. Tried to boot up with single ram (no go)
6. Tried both 2 stick of ram (as single) at each ram socket (no go)

At this stage i thought maybe my psu is the issue
I switched my psu with a 100% working one, but again it didnt post.

I guess thats almost everything i did.
Almost nothing happen after pressing the switch of using screwdriver to turn on pc.

My dead setup xD :
Motherboard: tuf gaming z790 plus wifi ddr5
Cpu: 13700k
Gpu: zotac 4070ti amp airo
Ram: gskill z5 trident 32gb 6400 - cl32
Aio: lt720
Psu: corsair rm850x (850w as it is already mentioned xD )
Ssd: samsung 990 pro - 1tb
Case: lancool 2 or 3 xD the newest one
3 adus fan for case (with 4 lian li dedicated case fan)


Psu which i tested if it post or not: 600w gold


Also checked everything with my phone flash but no sign of buring or no weird smell. Also changed my outlet just in case i have tried every solution, but no go either way.
also my pc had no problem, all tests were good, gaming and rendering was fine, no weird electrical overload or other bad things

anyone can help how this sudden problem can be fixed?
 
Feb 9, 2024
4
0
10
Will it help xD im actually douting if i could do anything to help my issue.
System appears to have more serious issue than a battery
But ill try