Question Displays suddenly went black with PC on, and PC will not turn off even when keeping the power button pressed in ?

[michaelkeane]

I was just using my PC, when both monitors suddenly shut off, and won't turn back on, all cables and connections seem to be fine, keyboard also seems to have shut off, and very strangely, all fans in the pc are running, and I cannot shut them off, i've tried holding in the power button for 10 seconds multiple times. my best guess is my motherboard was fried, not sure how that would've happened suddenly, (nothing out of the ordinary, like a power outage happened, and I wasn't messing with anything related to power at all) So my question is: Is this a motherboard failure? and if so, anything I should know regarding how to fix/replace and/or how this affects other components.

Specs:
Ryzen 5 3600 GTX 1660 Super, 16gigs of ddr4, ASrock motherboard, unsure as to the model, and unsure as to the power supply (since all fans are running I wouldn't think this was a PSU failure) I'd also like to note i have not had any problems like this in the 2 years I've had this PC


Fans still running, and with no way to shut them off using power button, is it okay to flip the PSU switch?

 

[DSzymborski]

Fans running means nothing. First place to look is a PSU failure, and there's absolutely no way I'd even try firing this up without knowing what PSU is inside. If this is a junk-tier PSU, firing it up could lead to even more problems than it's likely already caused and would be a likely source of the reason your motherboard is fried (if it is, in fact, fried).

 

[michaelkeane]

Fans running means nothing. First place to look is a PSU failure, and there's absolutely no way I'd even try firing this up without knowing what PSU is inside. If this is a junk-tier PSU, firing it up could lead to even more problems than it's likely already caused and would be a likely source of the reason your motherboard is fried (if it is, in fact, fried).

Alright the PSU is 500 watt 80 plus certified, i've had it for 2 years with no issues. if it is a PSU failure how can I go about confirming it?

 

[DSzymborski]

Alright the PSU is 500 watt 80 plus certified, i've had it for 2 years with no issues. if it is a PSU failure how can I go about confirming it?

That's just a wattage and a basic efficiency, not an identification of the PSU. And, in any case, you don't actually know you had no issues. Most damage is invisible until it is not. If this is a junk PSU, it could have very easily have been killing parts slowly for the last two years. But we'd need to know what the PSU is first.

 

[michaelkeane]

That's just a wattage and a basic efficiency, not an identification of the PSU. And, in any case, you don't actually know you had no issues. Most damage is invisible until it is not. If this is a junk PSU, it could have very easily have been killing parts slowly for the last two years. But we'd need to know what the PSU is first.

Yea sadly it's difficult to get more info, this was a prebuilt pc, I'm aware they are known for lesser quality PSUs.

So what would be the logical step for trying to get this fixed? first replace the PSU?

also, fans are still running, I haven't switched off the PSU for fear it might cause more damage than there already is, I will obviously have to switch it off at some point though. hopefully it won't cause more damage.

 

[DSzymborski]

Yea sadly it's difficult to get more info, this was a prebuilt pc, I'm aware they are known for lesser quality PSUs.

So what would be the logical step for trying to get this fixed? first replace the PSU?

also, fans are still running, I haven't switched off the PSU for fear it might cause more damage than there already is, I will obviously have to switch it off at some point though. hopefully it won't cause more damage.

There should be information *on* the PSU.

Obviously, you want a known good, working PSU. But I don't know how bad your current one is. Turning off the PSU won't cause damage.

 

[michaelkeane]

There should be information *on* the PSU.

Obviously, you want a known good, working PSU. But I don't know how bad your current one is. Turning off the PSU won't cause damage.

Alright, Thanks for all the help, i'll try to get more info on the PSU

 

[michaelkeane]

There should be information *on* the PSU.

Obviously, you want a known good, working PSU. But I don't know how bad your current one is. Turning off the PSU won't cause damage.

After turning off the PSU, I tried turning it back on and the pc booted up fine, probably worthwhile to replace the PSU anyway after all this.

 

[DSzymborski]

After turning off the PSU, I tried turning it back on and the pc booted up fine, probably worthwhile to replace the PSU anyway after all this.

You should, especially if it's junky. If it is in that tier, I wouldn't turn on the PC except in an emergency, given that you've already been given a warning. It's like having a seizure for the first time; you want to see doctor before a second one.