Question PC Randomly stopped working (no signal)

[BBNP]

Hi sorry I really have no idea where to post my problem. I also posted on Reddit so I'll just copy paste my post.

Hi guys this is a fairly new build. It's been working perfectly for the past 2 months. I was watching YouTube and I randomly got "no signal" and now I can't get it to work anymore. My GPU fan is spinning and the light on it is turning on so I'm not sure what's the problem. Restarted my PC when it happened and it just won't get signal anymore.

Here's my spec :
GPU : 5700XT Red Devil
MOBO : MSI Tomahawk Max
CPU : Ryzen 7 3700x
RAM : 2x 8gb Corsair vengeance
PSU : EVGA supernova 750 G3
Monitor 1 : BENQ XL2411P
Monitor 2 : Samsung LC24F390FHNXZA

Update : GPU Fans are actually not spinning. (But I believe they only spin when hot.)

Update 2 : tried removing and reinstalling the GPU but it didn't help. Also made sure all the cables are plugged correctly.

Update 3 : tried changing my GPU to an old one I had laying around and it still don't work. (This gpu as well as the other one's light does turn on.) My mouse and keyboard light doesn't turn on tho. Im 80% sure the light on my mouse would turn on as soon as I powered my pc.

 

[ChevetteSCx]

Try the following :

1.) Remove (disconnect) any accessory drives, M.2, SATA HDDs, SSDs and CD/DVD/BD and ReBOOT

If that fails, then try :

2.) Remove and reseat the DDR4 DRAM;
3.) Remove and reseat the CPU;:
4.) Check and reinstall the CPU cooler;
5.) Remove your PSU 24-pin ATX and 4/8-pin CPU connectors ;
6.) Check that all the wires are firmly in the Shells (pull on each wire to make sure it doesn't come out);
7.) Firmly seat the 24-pin ATX and 4/8-pin CPU back into the Motherboard;

Try to reboot

 

[onespeedbiker]

If above does not work, you may have lost your power supply..

 

[BBNP]

Thank you for the reply, I will give those a try and update after.

 

[BBNP]

Hi I tried all of that and still won't work. Is it really the PSU? Wouldn't the fan not spin and the light not light if the PSU was the problem?

 

[onespeedbiker]

No, the PSU will often fail in stages. It will produce enough power to light LEDS and spin fans, but will fail when it is taxed by the CPU/ GPU..

 

[BBNP]

Okay I guess I'll try buying another PSU then. Could it be something else tho?

 

[onespeedbiker]

Yes, it could be something else; eg motherboard or CPU

 

[scout_03]

before buying a new one do you have a way to test it in another system or have it test on someone else system .

 

[BBNP]

I have tried plugging my monitor to my mobo with a VGA cable and it also didn't work. Is there any way I can tell if it's actually the MOBO and not PSU?

 

[BBNP]

before buying a new one do you have a way to test it in another system or have it test on someone else system .

I could try testing it on another system yes.

 

[onespeedbiker]

You can use a power supply out of another PC or plug you PSU into another PC.

 

[BBNP]

Installed my psu on another old PC I had laying around and it turned on. So now what?

 

[onespeedbiker]

Your left with either the motherboard or CPU.

 

[BBNP]

Is there a way to test the mobo or cpu?

 

[Sohom]

try with single stick of ram... check each ram sticks and every ram slots one by one... seems a ram issue...

 

[BBNP]

I tried that but I guess I can try it again.
I'm not sure if that's something but whenever I turn on my PC my monitor turns on like if its receiving info from the PC but then says "no signal". If I don't plug my monitor it says "no cable connected".

 

[BBNP]

try with single stick of ram... check each ram sticks and every ram slots one by one... seems a ram issue...

Just tried that and it still won't work.

 

[Sohom]

Just tried that and it still won't work.

i still doubt its the ram or the processor... coz if there was an issue with gpu slot, then the pc wud at least boot and peripheral lights wud be on... but as ur pc doesnt boot at all, i guess its the cpu or ram...

 

[BBNP]

i still doubt its the ram or the processor... coz if there was an issue with gpu slot, then the pc wud at least boot and peripheral lights wud be on... but as ur pc doesnt boot at all, i guess its the cpu or ram...

Would a PC boot if it has no ram? Is there a way I can check if it's the cpu?

 

[Sohom]

Would a PC boot if it has no ram? Is there a way I can check if it's the cpu?

No, a pc won't boot with no ram... If u have a motherboard speaker, attach it...... It wud produce beeps if there is an issue... The number of beeps generally helps identifying the cause...

 

[BBNP]

I don't have a motherboard speaker :/

 

[Sohom]

I don't have a motherboard speaker :/

In that case, i wud suggest u to take it to the vendor, and if possible rma the ram, motherboard or cpu if required...

 

[BBNP]

So I noticed when I boot my PC that the cpu led on my mobo (Tomahawk max) light up red for a second is this an indication that the cpu is a problem or is that a normal thing?

 

[Sohom]

So I noticed when I boot my PC that the cpu led on my mobo (Tomahawk max) light up red for a second is this an indication that the cpu is a problem or is that a normal thing?

U should rma the motherboard and also check for bent cpu pins... now it seems a motherboard issue... and do also check if the ram is seated properly...