Computer turns on for 3-5 sec then turns off and turns on again + No video output

Mr_Adures

Prominent
May 19, 2017
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Hello!
So i'm building my new pc and i encoutered problems listed in title. Yes i checked PERFORM THESE STEPS BEFORE POSTING thread. Hovewer it still didn't solve my problems.
I checked and looks like everything is connected properly. Also it wouldn't solve the problem with turning on, off and on again anyway...

I have motherborad asrock e3v5
intel pentium g4560
graphics card is old radeon, but i know it is working, because i just took it out from working PC
My motherboard speaker is not beeping at all, when i have everything connected.
When i took out ram i heard 3 short beeps, so that indicates that speaker is working and (here i'm not sure) it means CPU/Motherboard is also working. If the speaker wasn't beeping after taking out RAM stick that would also mean tha CPU/Motherboard might be damaged (am i right here?)


It's not a display problem i used 2 different displays with 2 different BGA cables, Both i know should work.
All the fans are spinning.

Is that broken PSU? Would it prevent me from booting? I mean after it turns itself off and on again it looks like it should be working. I have no beeping sounds when everything is connected.

The ethernet diods are also working when i turn machine on. I don't think motherboard is damaged.

Please help i have no idea what to do now.

EDIT i forgot to add that my PSU is silentiumPC supremo L2 550W
also fixed cpu name
 


As an option, you can order a BIOS chip on ebay and replace the board's one. Or, you can contact ASRock and they might send you one, or you can try at a local pc repair shop.