Question GPU and Motherboard flashing LEDs after shutting down my PC ?

[pacmaniack]

This started 3 days ago, so my graphics card and mobo beging to flash whenever I shut down my PC
Also it wont turn on once i turn on/off the switch of the psu, it only turns on when time has passed and the PC is discharged.

I believe it is the PSU but im not sure, cause i dont have enough money to just replace the psu and turns out it wasn't the damaged component, what do you guys think, did this happened to you before?

I also should say about my history, my gpu died (rtx 3060ti (6 months of use)) so im using my old gtx 1070 which always cause this weird pixels whenever i turn on my pc on the bios loading screen and some times when playing heavy games this card freezes a bit the game and then continues idk if this additional info may help, so i gotta replace my gpu, but not for now still need to safe money, but now im not sure if my psu is dying too...

 

[Lutfij]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

I also should say about my history, my gpu died (rtx 3060ti (6 months of use))
This would be a point of concern with your rig and perhaps the PSU's ability to power anything else moving forward.

 

[pacmaniack]

CPU: I9 10900
CPU cooler: noctua nhd15
Motherboard: msi mpg z490 gaming edge wifi
Ram: 2x8gb corsair
SSD/HDD: 1x samsung evo pro m2 1tb, 1 kingston ssd 500gb, 1 hdd kingston 500gb
GPU: rtx 1070
PSU: corsair rm750x
Chassis: cooler master td500 mesh
OS: W11
Monitor: 1 samsung odyssey 3, 1 samsuung generic
the psu is from 1 year of use, the bios is updated to latest version, idk exactly the number

CPU: I9 10900
CPU cooler: noctua nhd15
Motherboard: msi mpg z490 gaming edge wifi
Ram: 2x8gb corsair
SSD/HDD: 1x samsung evo pro m2 1tb, 1 kingston ssd 500gb, 1 hdd kingston 500gb
GPU: rtx 1070
PSU: corsair rm750x
Chassis: cooler master td500 mesh
OS: W11
Monitor: 1 samsung odyssey 3, 1 samsuung generic
the psu is from 1 year of use, the bios is updated to latest version, idk exactly the number

So i checked my psu with a psu tester, and based on what i looked for, it seems the psu is working correctly, also tested jumping the psu and fan is working as well, the mobo is throwing cpu led alert, i also turned on the mobo without the cpu and still getting cpu alert, i think it might be the mobo that is damaged, any suggestion?

https://imgur.com/a/gSMmKal