Question PC Not turning on, might be PSU failure

[stbomber]

Greetings!
So, I finished building my PC (my first build ever btw), but when I turned it on, I got no display. I tried everything and still got no video.
First I suspected my GPU (it's the only hardware that is second hand) cause its fans would spin, stop, then spin and stop. I double checked everything, even the PSU cables, still no display.
Then I decided to check hardware by hardware, and when I plugged my GPU, for my surprise, it worked pretty fine. When I tried my RAM stick, my GPU started with the spin/stop stuff again, but here is the catchy thing: Without my RAM stick my mouse/keyboard aren't recognized, therefore their LEDs don't work. When I only plug my GPU without the RAM stick, same stuff: LEDs won't work.
This got me thinking it could be either a MB or a PSU failure.
Can anyone help me out on this? I felt really frustrated since I was expecting it to work and since I'll prob have to spend more money on it (Things here are really expensive)

Here's my config:

GPU: rx 570 redragon 4GB
PSU: Corsair 450W Bronze
CPU: AMD ryzen 5 1600
MB: ASUS A320M-K
RAM: 1X8 2400MHz VENGEANCE LPX

Thanks in advance!

 

[NightHawkRMX]

If fans spin up I would think the power supply is at least powering up and the issue is likely elsewhere. The psu could be the culprit, but looking at your specs i would think otherwise. What is the exact PSU model? Corsair makes several 450-watt bronze psus, ranging from poor (VS or old CX green) to decent (CXM grey) quality.
Check out this: https://forums.tomshardware.com/thr...ng-about-post-boot-no-video-problems.1285536/
I would move your ram stick around to different slots. First generation motherboards and Ryzen CPUs can be picky about ram (coming from first-hand experience) so i would point the issue to the ram or motherboard. Also, that ram configuration will cripple Ryzens performance. You really want at least 3000 speed in dual channel (2 sticks).

 

[stbomber]

Thx for the reply!
Its a Corsair 450CX (80 plus). I tried switching slots but it didn't work. I plan going on dual channel on the future.

 

[NightHawkRMX]

Try reseating cpu. I would suspect motherboard. Thats a good psu if it has grey label.

 

[stbomber]

It does have a grey label, not the green one
I'll try doing this when I get home, though I handled the CPU with extra care in order to prevent pins from bending.

 

[stbomber]

Update: I've installed the CPU again, nothing's changed. Think I'm going for a b350 this time

 

[NightHawkRMX]

Good idea. You could even go B450 for better firmware support for longer.
Cheap B350: https://pcpartpicker.com/product/2p...aming-3-atx-am4-motherboard-ga-ab350-gaming-3
Cheap B450: https://pcpartpicker.com/product/PCKcCJ/asrock-b450-pro4-atx-am4-motherboard-b450-pro4
both will work well.

 

[Dark Lord of Tech]

CX450 , CX450M and CX550, CX550M only have grey and black labels. So it has to be one of the decent ones. Poor ones were 430w , 500w , 600w.

 

[NightHawkRMX]

CX450 , CX450M and CX550, CX550M only have grey and black labels. So it has to be one of the decent ones. Poor ones were 430w , 500w , 600w.

Good to know. You think the motherboard change will help? I think if not motherboard, ram change will fix it.

 

[Dark Lord of Tech]

My opinion , both. A decent B450 board and a set of at least 3000mhz. memory.

 

[stbomber]

I plan on upgrading Both my motherboard and RAM, but at first I wanted to know what is really causing my PC not to boot since I want to use it and i cant upgrade Both at the same time. Why do my keyboard qnd mouse turn on Only when my ram stick is plugged on?

 

[NightHawkRMX]

Not all systems power keyboard and mice at first untill the board begins to post. If there is no ram installed, the board wont begin to post at all, and may not power keyboard. I would take that as a good sign that the ram changes the boot process. I would replace the motherboard first.

 

[stbomber]

Can I assume that my GPU is working fine then?

 

[NightHawkRMX]

Can you test it in another machine.

 

[stbomber]

Sadly, I can't, at least not now. I know that it goes wayy further than spinning fans, but it looks ok. If replacing the MB is really the solution, am I going to need to update the BIOS? Someone already told me to do that, but I dont have any Idea how.

 

[NightHawkRMX]

No your first generation 1600 doesnt need a bios update on any am4 motherboard. Any 300 or 400 series board will work.