Question Computer boot up normally while GPU is unplugged

[kb190]

Hi i have a problem that PC with Graphics Card start for a second and then suddenly turn off, otherwise when i unplug GPU PC boot up normally.

It all started yesterday when I was using my computer and all of a sudden there was a power outage, after restarting I had the problem mentioned above, I tried to replace the ram with other slots, disconnect the drives, disconnect and reconnect the cables from the PSU and after all these attempts I tried to remove the graphics card and start the computer, and it works, so I would really like some advice on what I could do in a situation like this. Thank you in advance

GPU:RX470
MOBO: GA-H110M-S2H
PSU: FRACTAL DESIGN 600W ESSENCE

 

[Darkbreeze]

That FD Essence is a low quality model. While there are exactly ZERO reviews of it, I'd bet good money that it's list of protections is minimal AND that the implementation of any protections it DOES have is poor at best. Likely only a MOV and that's probably shot now if the inrush current was at all significant.

The first thing you should do though is check your BIOS settings and make sure they weren't reset when you lost power. With a motherboard that old there's a good chance the CMOS battery is either weak or dead, and a power outage might have reset your BIOS settings if that's the case. Check to see that PCIe graphics are enabled. Also check to see that the CMOS battery isn't dead. Easily checked with any cheap volt meter. You can also check the PSU outputs to make sure they are all functioning as well. Sometimes a single rail will be affected in the PSU while the rest of it works fine.

You don't need a fancy meter, any cheap digital or analog meter works fine, even some five dollar one from Walmart or Harbor freight.

While it's entirely possible the graphics card could have been damaged by inrush current, it seems like a hard sell if the PSU and motherboard are both ok.

Might also try resetting the BIOS by removing the CMOS battery for five minutes and during that five minutes while the battery is out and the power cord is either disconnected or the PSU switch turned to the "0" position, press the power button for a few seconds. Then put it all back and see if it will POST with the graphics card installed.

If not, next step is probably either trying another graphics card in your machine or trying your card in a different machine. Since your board has only one x16 PCIe slot there is no option of trying the card in a different slot to see if maybe it was just that slots bus that was damaged.

 

[kb190]

Thanks for the answer darkbreeze, I checked the CMOS battery and it's fine even to be sure I replaced the old battery with a new one, I also enabled PCIe in the bios but it's still the same, it seems to me that the graphics card is causing a short circuit because even when the graphics card is not connected via an 8-pin cable and try to turn on the computer, the effect is still the same, the graphics card shows that I am receiving current because the white LED is on. Tomorrow I will borrow a graphics card from a friend to check if the x16 port does not cause a short circuit.

 

[Darkbreeze]

You really need to try a different card, or try your card in another board, because that is going to likely tell you everything you need to know. Now, of course there is always a chance it is more complicated, but if you are able to do any of those things to help eliminate potential issues, it's going to make figuring it out MUCH easier.

 

[Darkbreeze]

And just for the record, and for reference going forward, it would be REALLY good to have your FULL specs listed in one post, because I have a feeling that it is going to be of value since this likely isn't going to be a "oops, fixed" type of deal. It might be, but better to know it all all and not need it than try to figure things out with little information. So, full specs. All model numbers wherever possible. EXACT power supply model and the memory kit model, plus EXACT detailed steps as to everything that you DID already try would be on point.