[SOLVED] My computer won't turn on and only the fans are running

[GingerFox]

Hello, i've got a new computer that I've built for myself 1 year ago the pc was great for me and did everything I needed for work and gaming as well, sadly last friday I came home and turn on my pc to play and found out that it won't turn on for some reason (I used it just few hours before it happend and nothing happend to the pc while I was using it)
my computer didn't show any display and it just turn on and off every few seconds, I tried to reset the motherborad by taking out the CCOM battery and place it back after few min, I also re sitting all of the components and got a new thermal paste on my cpu still didn't worked for me, I also got a new PSU to look if it might be the problem after replacing the old psu with the new psu still the same results.. the pc wont turn on and only the fans were running.
I don't know how or what made it become like that but I am hopeless and I don't know what to do at the moment..
my pc is
intel core i5 - 9400f
RTX 2060 OC
motherborad asus prime B365M-K
16 GB of 2*8 ram G.skill
1 SSD 256 GB
1 HDD 1 terabyte
PSU (old - seasonic 650 W +80 bronze)
PSU (New - Antec 650 W +80 bronze)
Please help me I just want to hop back to my computer :\

 

[Ralston18]

Will your computer boot into Safe Mode?

Install a new CMOS battery.

Do you hear any beeps (beep codes). If so, what pattern do you hear? Likely some repeating series of short and long beeps. Listen carefully.

When you replaced the PSU did you use cables from the old PSU?

Case? Are you able to use a multi-meter to test the Power on switch? Or know someone who can help you do so?

 

[sonofjesse]

something died. Sure you didn't just unplug a monitor?

Look for error codes (display), lights, or beeps on the motherboard that is usually the first place to start.

Did you have a power surge?

What is your computer experience level?

 

[GingerFox]

Sadly turns out it was water leak from the a\c that made all of my room wet and it got to the inside of the computer, I'm not the best with computer I do understand most parts and I've build this gaming computer on my own, I gave it back to the store to see what parts are damaged they told me that the motherboard and the cpu are both dead basically they turn on for the first time and than later the pc shut down by "Blue screen of death".
I changed the parts to intel core i7 11700k and Tuf gaming motherboard - B560-plus wifi and now the pc run smooth and even better due to the upgrade of the cpu!
thanks for trying to help me I appreciate it a lot