Came home to a power outage- now the computer won't turn on. Time for a new PSU?

samuelladlay · Jan 29, 2018

Hey guys,

As described, came home to a power outage, after plugging everything back in, my PC wouldn't turn on. Plugging it into a new socket, and hitting the power will make it begin to power on. But then just conks out. I'm thinking it's time to fork out for a new PSU? What's the chance of my other components being damaged? The Pc had been on for a couple of days straight

I7 4790k
2 x 970s
850 evo 250gb
2tb hdd
Z97 MSI Mpower
H100iGTX Corsair
Cougar GX800w 80 plus gold.

The PSU comes with a 5 year warranty, so maybe I should hit that up.

Thanks in advance.

GhislainG · Jan 29, 2018

Does it power up if you remove the 970s? If so, then test each 970; otherwise test with another PSU (an old 300W is plenty without the GPUs).

woahwoahwilly · Feb 9, 2018

What is with people leaving their computers on every - single - freaking - waking - hour? Just shut them off! It's not that complicated!

Now that that's out of the way, here's my way. Buy a new PSU.

GhislainG · Feb 9, 2018

woahwoahwilly :

I fail to see the issue with computers being left on if needed, e.g., downloading a bunch of ISO files from Microsoft; they are designed to work 24 x 7.

woahwoahwilly · Feb 9, 2018

GhislainG :

Maybe if they have a workable cooling system. But seriously, why would you leave a computer on when you leave? You do, things like this happen, and then there goes the last, like, 200 bucks that you worked hard for.

Either way, computers can only run 24/7 if you actually have a decent cooling system. Which I may ask, @samuelladlay, do you have a good cooling system, or do you have a bad cooling system?

But all of that aside, you really shouldn't leave a computer running for, like, 72 hours. My dad does that, and if you wanna talk about issues, take a look at the issues he goes through and you would think that your issues are minor.

GhislainG · Feb 9, 2018

I have 2 computers on 24 x 7 and no issues whatsoever for several years. I keep my environemnt comfortable with a quality UPS; power outages are not an issue. If your father has issues, then there's something wrong like no UPS, an environment where the temperature isn't stable or components that aren't the best.

sm620 · Feb 10, 2018

That's kind of weird because your power supply has protections to prevent that kind of failure. You should have no problem getting a reimbursement from cougar if your PSU actually is bad. if you have a multi meter you should look up the pinout diagrams and test each pin to make sure its the correct voltage. you first have to connect the PSU_ON pin with a COM(ground) pin. Then check to make sure the voltages are close to the reference voltage. This isn't a perfect test because under load the numbers could change, but it might help if the numbers are way off or are 0.

If your lights flicker during storms or you have frequent power outages you should look into a UPS or other power smoothing devices to use in the future.

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Came home to a power outage- now the computer won't turn on. Time for a new PSU?

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