Monitor won't turn on

[GaboSampaio]

First of all, i know plenty people have asked this already but i tried most of the answers and nothing seemed to work.

ok so when i turn on my pc (z170 pro4s mobo, r9390x gpu, i5 7500, 1 8gb ram, 750w power supply) the screen doesnt turn on. i've connected the monitor to the mobo, and nothing tried resting the bios using the jumper, nothing. reconnected all the cables, you guessed it, nothing. i'm thinking it my be the power supply(font). now idk what to do and started to get desperated thx in advance.

 

[GaboSampaio]

i've notices both my gpu and case fans are not spinninf

 

[GaboSampaio]

Also it was kinda happening before but now it wont turn on for nothing

 

[DRagor]

So it is old rig that ceased to work? No fans spinning, no LEDs on motherboard, or maybe some signs of life when turning power on?

 

[GaboSampaio]

everthing seems to work fine, yes its an old rig(kinda). fans are spinning leds are working,cooler fans spinning, power supply fans also working, gpu seems to be working but the case fans, and gpu fans are not spinning.

 

[DRagor]

Tried already with GPU removed from build?

 

[GaboSampaio]

unfortunatly yes

 

[GaboSampaio]

i'm wondering if i have short in some connection or something

 

[DRagor]

Have spare PSU to try?

 

[GaboSampaio]

nope, i've got a multimeter tho.

 

[DRagor]

Worth trying if you know how See if case fans will start if you 'push' them by hand - that would mean they are not getting enough voltage.
Otherwise, right now it looks like faulty motherboard or faulty PSU, in that order.

 

[GaboSampaio]

case fans wont run if i spinn them by hand. 🙁 . idk how to test with the multimeter but i may google it hehehe

 

[GaboSampaio]

please god dont be the mobo....

 

[GaboSampaio]

i wonde if it is the motherboard wouldnt it be more sudden? because i was having this problem but after some atempts it would turn the monitor on.

 

[DRagor]

Good point, but if motherboard has problem with voltage regulator, it could cause this too.

 

[GaboSampaio]

hey do i need to connect both atx 24pin and the atx 8 pin connectors?

 

[GaboSampaio]

update: tried connecting just the cpu and a ram also connected a ethernet cable and it is twinkling. as far as i know thats should be like the last step of a mobo launch. maybe a faulty ram is fking me up?

 

[TheRealmjumper]

Hmm this is a tricky situation. It sounds like it might be the power supply to me. How old is your power supply? If you have multiple sticks of RAM, only plug one in and try booting up with each stick of RAM separately.

Did you have any power outages? Are you behind a power strip?

 

[DRagor]

hey do i need to connect both atx 24pin and the atx 8 pin connectors?

Yes.

 

[GaboSampaio]

ok so it is magicly working again, changed a bunch of stuff. only using one ram. the system doesnt seem like it's as stable as it should be. gpu fans are working again everything seems to be fine, i wonder it is my mobo bios or drivers. for some random reason i think the ram is causing me some kind of problem. i had some fps issues but changed the drivers and now it looks like it's ok only crashing while playing rainbow 6, other games are working fine. what seemed to help was actually the ram thing(sic) after changing ot's slot, might've been some connector causing a short. finally i dont think it's fixed i think it's just working wich is different hahaha

 

[Carnaxus]

You mentioned that you connected the monitor to the motherboard. If you have a dedicated GPU, don't connect the monitor to the motherboard; that bypasses the GPU.

 

[GaboSampaio]

Thanks everyone for the help you guys are great, praise the internet!
Changed the PSU and it worked like a charm!