in Bios no display after being plugged in for few seconds

[aumeh]

Hey guys this is my first intel build and it has been a nightmare (done many many amd's)

Specs will be below i have a hopefully simple issue. When i turn on the pc i see the mobo boot image and i press the right button to open just the bios ignoring anything else however the screen goes play after about 3 seconds of it showing the mobo screen.

However the weird thing is if i unplug the onboard dvi cord i have plugged in and plug it back into the pc (or the monitor) it shows again wala the bios screen that i selected, however it only shows it for few seconds then goes away again. I went through unplugging and plugging in looking through the bios but couldn't find a setting bad so i need you great people's at tom's hardware help

TLDR: pc turns on see display for 3 secs then goes away, if i unplug/replug back in the monitor it will work again for 3 seconds and then go back blank

I have tried different monitors and i have tried that cable/monitor on another rig and it works fine.


I also want to note i have a H170A-X1 with a I3-7100. Because i had a 7th gen processor i had to literally go out and buy a 6th gen that would fit this motherboard, use it and update the bios from there updating options. So just a FYI i did update it so the new I3 7th gen would work for this mobo now for specs:

CPU: I3-7100

RAM Crucial 8gb DDR4 2133 UDIMM Unbuffered DIMM 288-Pin Desktop Memory

Mother board - ASRock ATX DDR4 LGA 1151 H170A-X1

Power supply - EVGA W1, 80+ White 500W

Case (just in case) Cooler master HAF 912

 

[SgtScream]

So if I understand correctly, you cannot get to the bios. Is this correct?

 

[aumeh]

So if I understand correctly, you cannot get to the bios. Is this correct?

I actually can get into the bios and the computer in all honestly is working just fine except the display is not working. (Well it does work but after 3 seconds it goes black) very strange i know.

 

[herrwizo]

This is indeed very strange. I can only guess that the issue boils down to either:

1) BIOS not quite optimized/buggy with Kaby Lake integrated GPU
2) DVI cable you are using is somehow faulty, although that's hard to believe

It is most likely 1). In that case, it would likely not happen with a 6-series CPU (if you still have it, test with it!). In any case, using a discrete GPU would also most likely resolve the issue.

 

[SgtScream]

So if I understand correctly, you cannot get to the bios. Is this correct?

I actually can get into the bios and the computer in all honestly is working just fine except the display is not working. (Well it does work but after 3 seconds it goes black) very strange i know.

Did you install windows? I'm just trying to get a better understanding of your situation to better help you.

 

[aumeh]

This is indeed very strange. I can only guess that the issue boils down to either:

1) BIOS not quite optimized/buggy with Kaby Lake integrated GPU
2) DVI cable you are using is somehow faulty, although that's hard to believe

It is most likely 1). In that case, it would likely not happen with a 6-series CPU (if you still have it, test with it!). In any case, using a discrete GPU would also most likely resolve the issue.

I do agree it's not option 2 due to i've changed it. Option 1 i agree with but what do i do from here? i'm on the latest firmware so its not that.

 

[herrwizo]

Until new BIOS gets released with fix, not much you can do I'm afraid. You can get a discrete GPU - I'm aware this is more of a workaround than the solution, but it should solve the issue. If you can borrow a functional graphics card from a friend, test with it.

 

[herrwizo]

As an addition, it would almost certainly work fine with a 6-th gen CPU, but that's not why you bought a 7-th gen 😉

 

[aumeh]

So if I understand correctly, you cannot get to the bios. Is this correct?

I actually can get into the bios and the computer in all honestly is working just fine except the display is not working. (Well it does work but after 3 seconds it goes black) very strange i know.

Did you install windows? I'm just trying to get a better understanding of your situation to better help you.

Yes its not a windows issue i can unplug everyone just the basics (RAM,MOBO,CPU,Power switch, Power supply) and it will still do this