PSU Blew Out, Now Mobo Won't Bleep When Booting + No Display

[mikeym1989]

Hi there guys,

I'm a bit of a noob so be gentle, I'm a bit delicate after potentially destroying my entire PC....

I recently upgraded my GPU, and after playing circa 10 minutes of a next-gen game my PSU blew out - sparks, smoke etc. I have now bought a new PSU and when booting this up, I can see there is power to the mobo as all of the fans start (fans, GPU & CPU fans). However, there is no display and there is no follow up 'bleep' from the motherboard to indicate it will begin loading.

I'm pretty resigned to having at least knackered my motherboard, however I wondered if there is a process I could use to work out what is damaged - my main fear is that I'll have destroyed the new GPU also, the CPU - everything.

Any advice here would be greatly appreciated.

Thanks a lot,

Mike

 

[Mac070]

First question : what was the power supply? Brand and wattage .
Secondly : what's the new power supply your using now ?
Thirdly : try to use the onboard graphics instead of the graphics card. If the system works then it killed your graphics card . But dont worry ! This is why you can rma or send the gpu in to the manufactor .

 

[nitrium]

I recently upgraded my GPU, and after playing circa 10 minutes of a next-gen game my PSU blew out - sparks, smoke etc.

Very curious to know what PSU (brand and model) you were using. That should never happen with a good one, i.e. quality PSUs are designed to never allow for the possibility of blowing up any components attached to it.
In any case there is a good chance that at least some of your components survived, but there is probably no way to know without trying each in turn in a working system.

 

[mikeym1989]

Unfortunately can't recall the brand but it definitely wasn't a particularly well esteemed one - it was a 500watts job that had run perfectly fine with an HD6770 and then an HD7770 but blew out when trying to run with an R9 270.

I have removed the GPU and tried booting after connecting the display to the motherboard and had the same response. Likewise I have removed all the RAM and still nothing.

I guess I won't know the damage to the other components until I take the hit and invest in a new motherboard?

 

[Mac070]

If the system boots or at least has spinning fans then the cpu is most likely fine . I would try to upgrade the motherboard as this seems like a clear factor here . But usually most motherboards have certain protections against this . Or try your gpu and cpu in different system to see if it really is the motherboard . Also I'm really curious on what psu you had . Try to find out the name

 

[mikeym1989]

If the system boots or at least has spinning fans then the cpu is most likely fine . I would try to upgrade the motherboard as this seems like a clear factor here . But usually most motherboards have certain protections against this . Or try your gpu and cpu in different system to see if it really is the motherboard . Also I'm really curious on what psu you had . Try to find out the name

Thanks a lot for the response(s) - as an update, the motherboard boots up now and displays when I take out the GPU. However, when I put the GPU back in and boot, the motherboard makes the sound as if it is booting up okay, but there is no display.

This would suggest the GPU is knackered, however when I replace the new GPU with the old (one that I know was working previously) there is still no display - this suggests the actual GPU slot is knackered on the mobo now?

 

[nitrium]

Thanks a lot for the response(s) - as an update, the motherboard boots up now and displays when I take out the GPU. However, when I put the GPU back in and boot, the motherboard makes the sound as if it is booting up okay, but there is no display.

This would suggest the GPU is knackered, however when I replace the new GPU with the old (one that I know was working previously) there is still no display - this suggests the actual GPU slot is knackered on the mobo now?

Whip into the BIOS and switch around the display priority (i.e. switch from on-board first then PCIe or vice versa). Getting no display is actually pretty common even when everything is working.
Also make sure that the power connectors are fully inserted into the GPU (even if they are just slightly out you can get a back screen).

 

[mikeym1989]

Thanks a lot for the help here guys, massively massively appreciated. Everything appears to be working okay and somehow survived the PSU exploding... I'll monitor temperatures closely going forward in case there's some unseen damage. I Can't thank you both enough for talking me through here.

 

[nitrium]

Thanks a lot for the help here guys, massively massively appreciated. Everything appears to be working okay and somehow survived the PSU exploding... I'll monitor temperatures closely going forward in case there's some unseen damage. I Can't thank you both enough for talking me through here.

That sounds like the PSU is working like it should (see my first reply). The PSU is supposed to take the hit as it were, when something catastrophic happens (e.g. power surge or a failure of the PSU itself).