New Member AMD Motherboard Thread

Welcome to the forums cl3cl3, here is your thread.

Welcome to the forums MegaLitr, I have created a thread for you here

Here is your new thread pyrotiger.

i am using a b450 pro4 since January 2020.
Config:
Amd ryzen 5 3400g
Asrock b450 pro 4
ADATA XPG Gammix 8GB X 2
Crucial MX500 256gb
Crucial BX500 500gb
wd blue 2tb
wd blue 4tb
Corsair cx450
Corsair carbide spic delta

APC BX600i UPS

from 03/08/2025, the computer switches on sometimes and sometimes it doesn't (for many days).
if it doesn't, i leave the ups on. it might switch on after 15-20 minutes or even after 5-8 hours.
when it starts after this dead episode, it shows an incorrect time (some 2-3 hours after it was switched off) e.g. i turn off the computer at 10:30pm then when it gets switch on, it might show time as 12.44AM next day. cmos battery is new, installed just a month back.

3 days back (after a 10days dead episode), it was disassembled, new thermal paste applied and reassembled. it worked that day. next day i tried in the evening but it didn't work. yesterday it started after an hour and worked.
i tried a different working psu as well when it was not working but it did not switch on then too.
removed ram sticks and it didn't switch on.
removed all peripherals / HDD / SSD and it doesn't switch on many times.

when it gets switch on, it works fine like today it is working for some 8 hours without any issue.
no one in the city has any idea why it doesn't switch on sometimes. i have consulted a lot of people who provide service and even a gold medalist electronic engineer. i have tried various tech forums but no one has any idea except checking motherboard and processor with different working ones which people say can be done in the official service centre.

The most surprising thing is that it charges my digital watch from the front panel usb port when it doesn't start (cpu / cabinet fans doesn't start).

another issue i noticed since day before yesterday that when i am working on facebook, if a click on any image to open it, it shows a light black rectangle sort which flickers for a second and then shows the image.

i am ready to replace the part which is faulty but have no idea which one has any issue. i wanted to get the motherboard checked if there is any method in service centre to make sure that there is some fault in the motherboard so that i can get it replaced if it is faulty.

what could be the problem in it?

i have sent asrock support an email for the details of service centre in my city on 11/08/2025 but they have not replied till now.
i have seen the details on asrock website and tried to call on that number but it was not answered.
i have looked for the details of that company that provides service and called on their other number, they confirmed tha they are the same company but replied that WE DON'T DEAL IN COMOPUTER.