Question Power LED is glowing on PC case but PC is not turning on, and no fans or fan LEDs are working ?

[ankit_sharma]

I was using my pc as usual it had valorant (game) opened, a browser tab and WhatsApp opened but suddenly it turned off. All the fans and fan's led stopped working except the power button led on the cabinet. Not even the cpu fan working. I tried re- plugging all the possible connectors, RAM and even the processor but it still won't turn on. The usb ports on the cabinet are working(I tried to plug my phone and it was it charging ). The motherboard seems not to get power because no ports on the motherboard are working. I personally think that it's a motherboard issue.

I use a UPS to power my system but I tried even without that and it still won't turn on.

My system details are:-

Case: Galax Revolution 01 cabinet
Mobo: Gigabyte B45M DS3H WiFi
CPU: Ryzen 5 5600G
SSD: Crucial P3 M.2 1TB
PSU: Cooler Master MWE 550 bronze v2
RAM: G skill ripjaws 2 x 8GB
UPS: Luminous Pro 1000

Please provide solution if possible. Thank you