Since i bought my new pc, for 1 week it was running fine at 3200 mhz. After my issue started i updated bios and tried again at 3200mhz but my problem didnt solved. I went back to my local pc service and told me it was a faulty motherboard. I changed my asus x470f gaming to x570f gaming but my problem remains exactly the same, even with x570f gaming and after 1-2 weeks my pc didnt post at 3200mhz. Again back to pc service, they tried with 2 different ryzen cpu, psu and another compatible pair of ram but they still cant make it post at 3200mhz, the higher they could get it is 2600 mhz. I believe its psu that causes this, for some reason it affects the motherboard and make it impossible to work properly.
Asus x570f gaming (x470f gaming previous mobo)
Ryzen 5 3600
Gskill tridentz rgb 2*8GB (olso tried with gskill ripjawsV)
Corsair TX-M series 650W gold+
RX5700XT Red Dragon
NVMe samusung ssd 250gb*