u/Elumiie

A couple of days ago I turned off my computer (after a long videogame update) and when I wanted to boot it up again 10 mins later it just wouldn't start anymore. I tried a couple of things, but hit a point where I am seriously not the right person to be fixing this alone.

It has:

• AMD Ryzen 5 1600 six core processor (8 y.o.)
• Asus GeForce GTX 1050ti GPU (3 y.o.)
• 2x 16gb Corsair RAM (3 y.o.)
• Gigabyte B550M Aorus Elite Mainboard (1 y.o.)

What's happening:

When I turn it on it first sounds normal, but then something shuts off and only the fans are running (including GPU, processor and HDD fans (or whatever else may be spinning in my HDD)). The monitor never turns on, it never even starts booting.

The mainboard doesnt have internal LEDs, but the outside LED for the power is glowing, the read/write LED stays off. I tried connecting speakers to the speaker pins, but they didn't output any beep code.

About a month ago the PC had an Issue where it would randomly shut off. I managed to solve it by placing the RAMS into different slots (A1,B1, instead of A2,B2.) I tested both ram sticks separately in different slots by now, but the behaviour doesn't change.

I also tried plugging in the monitor into the Mainboard, so it's definitely not the GPU.

I also tried a CMOS reset.

All of the connections on the mainboard seem to be plugged in tighly, I checked all of them. Nothing is loose.

Some weird behaviour:

Normally when my PC was off, but still connected to electricity, all of the devices directly connected to the mainboard still recieved electricity (mouse, keyboard). Any time when I pressed a mouse key, it would briefly light up.

Now that doesn't happen anymore.

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I'm suspecting that it's either Mainboard or Processor issues, but I have no idea how to check for that directly (and if I should even be the one doing that, I'm fully prepared to take my PC to a repair shop). I just wanted to ask here if any of you have any ideas or advice. I'd appreciate any help.