EVGA 850G Woes

ISAslot

Platinum Member
Jan 22, 2001
2,881
97
91
I purchased this PSU about a year ago and it worked flawlessly until one day last month my system just shut off and would not come back on. I tested it outside of the system and confirmed it was dead.

It was still under warranty (5 yr) and EVGA cross shipped a refurb unit. I popped it in and all seemed well until the next day when I tried to wake the computer from sleep. Rather than waking, the system just turned off, and would not turn back on until I switched the PSU off (or unplugged it) for at least 15 minutes. This was annoying, but at least the system would kinda work.

Meanwhile, I submitted a new ticket and EVGA cross shipped another PSU. I tested this one outside of the system just to confirm it worked. I turned it on, off, then back on to confirm it did not need to wait 15 minutes before it would work again. I then installed it. The next day, when waking from sleep... the system just turns off.

Frustrated at this point, I dug out my older corsair CX430, installed it, and removed my Vapor-X Radeon R9 280X. It worked great, and the next day, it woke from sleep fine.

Curious, I re-tested the two PSUs outside of the system. The second one did the same as always, it would turn on, but require a 15 minute wait switched off to turn on again. I tested the 3rd one and it would turn on. I switched it off and it would turn on again. I was confused, but remembered it did that fresh from the box. So I tried to turn off and back on a 3rd time, and no dice.

So I just waited 15 minutes and now it turns on again. Should I just contact EVGA again, or do I have something else going on I should look into?
 

UsandThem

Elite Member
May 4, 2000
16,068
7,380
146
Having that many issues with all those power supplies is likely an indicator you have something else wrong with your system, or maybe even a problem with your electrical outlet.

You didn't list how old your hardware is, but maybe you have some bad/swollen capacitors on your motherboard. It could also be the video card since your system worked correctly once you removed it. They also can develop bad/swollen caps.

I'd try the EVGA power supply without the video card. If no issues, you probably have found your problem.
 

13Gigatons

Diamond Member
Apr 19, 2005
7,461
500
126
It should be noted that sleep mode is always buggy. I have it disable on several systems. Your computer should be on, off or hibernate.
 
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MrTeal

Diamond Member
Dec 7, 2003
3,587
1,748
136
Do you have a link to the exact model?

Some Corsair 850 models (the GS) are Seasonic units, and the Seasonic at least will not reset easily if there is a overcurrent event even if you power cycle it. You need to give it time for the polyfuse to reset. It usually will reset immediately if you disconnect the 24 pin connector and plug it back in.

I'd agree with UsandThem though, three PSUs having issues points to something else being the problem.
 

Mike64

Platinum Member
Apr 22, 2011
2,108
101
91
It should be noted that sleep mode is always buggy. I have it disable on several systems. Your computer should be on, off or hibernate.
"Always buggy" in what way? I've never had any problem with it (under 64-bit Vista, anyway.) Hibernate has always seemed pointless to me on a desktop, where battery life is irrelevant and the risk of data loss infinitesimal as long as you don't do silly things like leaving long documents or spreadsheets open when you go away from the computer more than briefly (and those program invariably have an auto-save function anyway, so even if something unusual were to happen, you'd lose a few minutes work at most.)
 
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13Gigatons

Diamond Member
Apr 19, 2005
7,461
500
126
"Always buggy" in what way? I've never had any problem with it (under 64-bit Vista, anyway.) Hibernate has always seemed pointless to me on a desktop, where battery life is irrelevant and the risk of data loss infinitesimal as long as you don't do silly things like leaving long documents or spreadsheets open when you go away from the computer more than briefly (and those program invariably have an auto-save function anyway, so even if something unusual were to happen, you'd lose a few minutes work at most.)

Tech forums are littered with users complaining they can't get sleep mode working correctly. It seems to be a common complaint.

Hibernate is great when you want to turn off the computer but save your exact place. No need to close every piece of software. I don't use it much but I'm glad it's there.
 

nenforcer

Golden Member
Aug 26, 2008
1,767
1
76
Yeah this is another situation where its good to take out all video / peripheral cards and start with only a single DIMM of memory and slowly add one piece of equipment back at a time to try and narrow down what is causing the PSU to not turn back on. Those PSU are new enough that like others have suggested it sounds like they are maybe behaving correctly by detecting and over / under current and staying off for safety reasons. I've used a couple of EVGA NEX650G PSU by FSP without any issue so far.
 

ISAslot

Platinum Member
Jan 22, 2001
2,881
97
91
Well, I got the time to place the video card back in while using the old Corsair PSU. It works fine. Wakes from sleep the next day too.

There is one slight difference I want to try. When I had the EVGA PSUs installed I also had my Panflo hooked up. I will try with that as well before I place the blame back on EVGA.
 

ISAslot

Platinum Member
Jan 22, 2001
2,881
97
91
Do you have a link to the exact model?

Some Corsair 850 models (the GS) are Seasonic units, and the Seasonic at least will not reset easily if there is a overcurrent event even if you power cycle it. You need to give it time for the polyfuse to reset. It usually will reset immediately if you disconnect the 24 pin connector and plug it back in.

I'd agree with UsandThem though, three PSUs having issues points to something else being the problem.

Here's the PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438034

It does seem odd that 3 would be bad. However the first lasted about a year and died outright. It never turned on again. The refurbs i'm getting are all the same. They will start fine once, maybe twice, then fail to start again without a timeout. This is whether they are in the system or on the testbench.
 

ng4330

Junior Member
Dec 18, 2015
12
1
11
I purchased this PSU about a year ago and it worked flawlessly until one day last month my system just shut off and would not come back on. I tested it outside of the system and confirmed it was dead.

It was still under warranty (5 yr) and EVGA cross shipped a refurb unit. I popped it in and all seemed well until the next day when I tried to wake the computer from sleep. Rather than waking, the system just turned off, and would not turn back on until I switched the PSU off (or unplugged it) for at least 15 minutes. This was annoying, but at least the system would kinda work.

Meanwhile, I submitted a new ticket and EVGA cross shipped another PSU. I tested this one outside of the system just to confirm it worked. I turned it on, off, then back on to confirm it did not need to wait 15 minutes before it would work again. I then installed it. The next day, when waking from sleep... the system just turns off.

Frustrated at this point, I dug out my older corsair CX430, installed it, and removed my Vapor-X Radeon R9 280X. It worked great, and the next day, it woke from sleep fine.

Curious, I re-tested the two PSUs outside of the system. The second one did the same as always, it would turn on, but require a 15 minute wait switched off to turn on again. I tested the 3rd one and it would turn on. I switched it off and it would turn on again. I was confused, but remembered it did that fresh from the box. So I tried to turn off and back on a 3rd time, and no dice.

So I just waited 15 minutes and now it turns on again. Should I just contact EVGA again, or do I have something else going on I should look into?

I'm seemingly having the exact same issue as OP with the EVGA 850G (same model shown in the Newegg link). It started after months of working fine, coming out of sleep mode with no issues. Then one day when I tried to wake it from sleep mode, it just turned off instead and would not power back on. The solution was to unplug it for 15 minutes or so and then it would power on. From then on, anytime I put the computer into Sleep mode or Shut Down, I had to unplug it for the 15 minutes (sometimes longer) before it would power on. (I was able to Restart the system via the Windows start menu without issue.) I tried it in different outlets, with and without surge suppressor, with the same results.

I RMA'ed the PSU, put the new one in and had the exact same issue. I lived with it for a few weeks while searching for a solution (I somehow never came across this post). Eventually the computer refused to power on at all, no matter how long it was unplugged. When I did plug it in, I could tell the PSU was providing at least SOME power to the system as LEDs on the motherboard would light up. I took everything out of the case and tried powering up just the motherboard/processor/RAM (MSI Z97 Gaming 7/ i5 4690k/1 stick HyperX 4gb) with the 850G - still nothing.

I RMA'ed the motherboard, installed the replacement and things seemed to work for the first week or so (though I did have 1 or 2 instances or the system failing to power on - this was corrected by unplugging and immediately plugging back in, no waiting required before powering on). Otherwise, I was able to shut down and power on without unplugging. I put it in sleep mode a few times and it woke from it properly.

Yesterday, I left it in sleep mode overnight and when I tried to wake it today, it turned off and would not start. I left it unplugged for 45 minutes or so and just tried powering on now and was not able to. I have it unplugged again and will try it again in a while.

In the meantime, I found this post and figured I'd check to see if anyone experiencing this problem ever came up with a definitive solution. At this point I'm thinking my next step is going to be buying a different brand and model PSU. If anyone has alternate solutions or ideas (or can confirm a new PSU is necessary), I'd appreciate the input. Thanks all!
 

tamz_msc

Diamond Member
Jan 5, 2017
3,865
3,729
136
It might also be a software issue after a recent Windows update. Try a system restore and see if the problem persists.
 

ISAslot

Platinum Member
Jan 22, 2001
2,881
97
91
I recently just received my 3rd replacement PSU from EVGA. I have not put it in yet to try it. My system works great with my old Corsair PSU. The only thing I can't do is play taxing games, but I haven't done that in a while. I will try the PSU soon and post the results.
 

ng4330

Junior Member
Dec 18, 2015
12
1
11
I recently just received my 3rd replacement PSU from EVGA. I have not put it in yet to try it. My system works great with my old Corsair PSU. The only thing I can't do is play taxing games, but I haven't done that in a while. I will try the PSU soon and post the results.

Great, I'm interested to hear what happens. My system will not turn on at all, no matter how long I leave it unplugged. I did write to EVGA tech support to see if they offer any help but I'm assuming they'll just tell me to RMA it again. If they say anything helpful, I'll share it here.
 

ng4330

Junior Member
Dec 18, 2015
12
1
11
As expected, the evga tech support stated they never heard of this problem and assured me a replacement unit would fix the issue. I'm skeptical but went ahead with the RMA and am waiting for the replacement unit to arrive.
 

ISAslot

Platinum Member
Jan 22, 2001
2,881
97
91
I installed the 3rd RMA on Friday. So far it's doing okay. Time will tell if it lasts.
 

ng4330

Junior Member
Dec 18, 2015
12
1
11
I received my RMA as well. In the interest of finding the solution to this issue and helping out anyone else that is experiencing it, I'll document my experience here:

Yesterday, before installing the new unit, I tried one last time to plug in and turn on the system with the PSU that had failed to turn on back on Feb 4. The last time I had tried turning it on was Feb 6. It had been unplugged ever since then. When I plugged it in and hit the case power button, the system turned on normally.

When I got into Windows, I went to MSI's site and downloaded all the current drivers listed with my motherboard. I had updated everything a few months ago but I just wanted to be sure all the drivers were current.

After installing them, I restarted the system. It restarted normally. I went into the BIOS before letting it get to Windows to check the BIOS version. When I had the BIOS version written down, I selected the save and reboot option from the BIOS menu. This time when it restarted, it shut off and never came back on.

There are a few lights on the motherboard that are always on and these were still lit. Also, I have an NZXT X61 cooler on my CPU which has a lighted logo. The logo was still lit on the cooler. I'm not sure but it seems like there may be some correlation between the cooler light staying on while the system is off, and the system not turning on. When I shut the computer down normally, the cooler light is turned off. When it shuts off and does not turn back on, the cooler light seems to usually be on.

I unplugged it, let it sit for a minute, plugged in, hit power - nothing. I immediately took out the PSU and installed the new unit. (This actually was a new PSU - shrink-wrapped retail box, sealed, all accessories/cables included, unlike the first RMA I received - just the PSU in a cloth bag.) I turned the "Eco" switch on the PSU to the "Off" position in case it was causing an issue (I'm not sure whether I had this switch on or off on my previous PSU's). I plugged it in and the system turned on normally.

I returned to Windows, finished installing drivers, restarted from Windows a number of times with no issues. I flashed the most current BIOS onto my MB's second BIOS slot, restarted the system from the BIOS a few times and had no issues.

The only thing I have not tried is putting the system into Sleep mode. Since Sleep mode seems to be a central factor in this whole problem, I can't decide whether its worth the risk to test it or just resign myself to not using the feature with this system. For now, I've turned off Sleep mode in all the power settings and am not going to manually use it for a while. I want to use the system for some time to see if the issue occurs without Sleep mode being used.
 
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