Pc abruptly shuts down and restarts when gaming in case of power failure!

[BUlly_boy_2101]

This problem is haunting me for the past one month.First i thought my psu was faulty and therfore i changed it.But after i bought a new one the problem still continues. I now think that the UPS is the prime suspect.But i also changed my UPS a while ago........PLEASE HELP!!!!
MY RIG;
MOBO- Gigabyte b75m-d3h
PSU-Corsair RM650
GPU-gtx 970
CPU-i5 2310 @2.90GHz
Ram-2*4 ADATA ram
UPS- Cyberpower 500v unit

 

[R_1]

run the system on the mains (remove the UPS) check for stability.
if the power supply is good and the ups is good check the ram.
shut down the system and pull a ram stick out. check for stability. if stable swap ram sticks and recheck for stability.

 

[BUlly_boy_2101]

run the system on the mains (remove the UPS) check for stability.
if the power supply is good and the ups is good check the ram.
shut down the system and pull a ram stick out. check for stability. if stable swap ram sticks and recheck for stability.

how to check for stability.And by the way this problem occurs not only in gaming but whenever the pc is under load. when im on the logon screen i tried shutting down the mains and there was no problem.But whenever the pc is under load and the power goes off the system shuts down and starts again.

 

[JackNaylorPE]

I don't quite understand what "when gaming in case of power failure!" means. Yes, you have a UPS in cade of power failure tho it's a bit of a luxury considering the RM series PSU quality. It's east to see if the UPS is causing the failure... simply remove the UPS from the equation and test it.

Also not sure what a 500 volt UPS is (VA perhaps ? ... too small).... A 650 watt load would normally translate to a 1000 - 1500VA UPS.

Have you examined system logs (Event Viewer), recorded CPU / GPU Temps / voltages ?

 

[Wolfshadw]

A 500va UPS unit is only going to power around a 300-350 watt system. Your system is likely drawing more than that and without sufficient power, it restarts. Specifically, what model UPS do you have?

-Wolf sends

 

[R_1]

check for stability means reboot and try to get it to crash again. if it crashes, change ram sticks and check again. if it crashes yet again you have removed the ram as the source of the problem. as an example.

 

[R_1]

I don't quite understand what "when gaming in case of power failure!" means. Yes, you have a UPS in cade of power failure tho it's a bit of a luxury considering the RM series PSU quality. It's east to see if the UPS is causing the failure... simply remove the UPS from the equation and test it.

Also not sure what a 500 volt UPS is.... A 650 watt load would normally translate to a 1000 - 1500VA UPS.

Have you examined system logs (Event Viewer), recorded CPU / GPU Temps / voltages ?

I took it to mean the system randomly reboots based on the rest of the message.

 

[BUlly_boy_2101]

Actually im not a pro in handling these complex voltages and stuff. The simple problem is that when the pc is under load( gaming,benchmarking and stuff) and the power goes off. the pc simply shuts down abruptly and then starts up again.
My ups-CYBERPOWER BU600e -BU series( sorry it is a 600Va unit a not a 500Va unit)

 

[Wolfshadw]

Yes. Specs for that unit state it will power a system that draws no more than 360 watts. Your current system, under load, likely draws quite a bit more than that, so, when your power goes out, your system reboots as the UPS cannot provide sufficient power to the computer. Look for a UPS that can handle at least a 500 watt load.

-Wolf sends

 

[BUlly_boy_2101]

Yes. Specs for that unit state it will power a system that draws no more than 360 watts. Your current system, under load, likely draws quite a bit more than that, so, when your power goes out, your system reboots as the UPS cannot provide sufficient power to the computer. Look for a UPS that can handle at least a 500 watt load.

-Wolf sends

Thank you.Can u please suggest a good ups for this pc buid it would be much appreciated!!

 

[R_1]

so your gaming/benchmarking and have a blackout (building wide power outage) and instead of the system running on the battery (UPS) and shutting down properly, it dies and reboots?
your UPS is too small and cannot power the system when power goes out. that unit is rated to 340 watts, during gaming and benchmarking your system, without monitor, is needing more power than the battery can provide. booting the system however is much less power hungry which is why it suddenly reboots after failing to supply power. it is worse if your monitor is plugged into it too.
get a UPS rated at 1000 watts just for your computer and use the small one for your monitor. imho

 

[JackNaylorPE]

I took it to mean the system randomly reboots based on the rest of the message.

OK, but random reboots have nothing to do with a power failure. I am surprised your UPS is not beeping, as I said above, it's undersized for your PSU alone, let alone a monitor or anything else that might also be plugged into it

 

[BUlly_boy_2101]

thank you guys for your response..but please suggest a good ups for this build

 

[BUlly_boy_2101]

the pc does not shut down properly....its just a black out, everything goes off even my cabinet fans. it happens abruptly and then is starts up again. if this thing continues ill loose all my data and i even fear my hard disk is going to be doomed..

 

[R_1]

the pc does not shut down properly....its just a black out, everything goes off even my cabinet fans. it happens abruptly and then is starts up again. if this thing continues ill loose all my data and i even fear my hard disk is going to be doomed..

http://www.newegg.com/Product/Product.aspx?Item=N82E16842102250&cm_re=UPS-_-42-102-250-_-Product
just as an example - I would suggest this for the power supply you have. it can provide a little more than you need. just make sure that the computer is the only thing plugged into the battery side.

 

[JackNaylorPE]

Again, disconnect your PC from your UPS and see if the behavior continues.

I use the Cyberpower 1500 VA pure sine wave units ....
https://www.dougv.com/2010/03/active-pfc-enabled-psus-are-not-compatable-with-most-low-end-ups/

You can size how big here

http://www.csgnetwork.com/upssizecalc.html

 

[R_1]

Again, disconnect your PC from your UPS and see if the behavior continues.

I use the Cyberpower 1500 VA pure sine wave units ....
https://www.dougv.com/2010/03/active-pfc-enabled-psus-are-not-compatable-with-most-low-end-ups/

You can size how big here

http://www.csgnetwork.com/upssizecalc.html

it only happens when there is a blackout. removing the UPS will result in obvious results.

 

[Wolfshadw]

I'd probably look at something like this Tripp Lite 1300 VA 720 W 8 Outlets UPS. When the power goes out, you should have enough time to properly shut down your system.

-Wolf sends

 

[JackNaylorPE]

it only happens when there is a blackout. removing the UPS will result in obvious results.

It doesn't appear so. In my experience, when you draw too much power from a UPS, you get an audible warning. If you are not hearing that, then it leaves the possibility that the PSU is still a problem. In order to rule out the OPSU being the problem, she question I was trying to have answered is if the PC works fine when plugged into an outlet w/o a UPS. Then we know whether the problem lies with the UPS or PSU.

 

[BUlly_boy_2101]

it only happens when there is a blackout. removing the UPS will result in obvious results.

It doesn't appear so. In my experience, when you draw too much power from a UPS, you get an audible warning. If you are not hearing that, then it leaves the possibility that the PSU is still a problem. In order to rule out the OPSU being the problem, she question I was trying to have answered is if the PC works fine when plugged into an outlet w/o a UPS. Then we know whether the problem lies with the UPS or PSU.

i do not think the psu is faulty because i just bought it yesterday!!!

 

[BUlly_boy_2101]

is this problem caused by any other component....this is truly unusual because even my cabinet fans(which are directly hooked up to the psu) stop. If there was a problem with the processor,motherboard,ram etc my fans would still be running...but it does not happen...its just an abrupt shutdown.then it starts up again normally. so from this i can figure out that the problem is either with the psu or the damn ups.So eventually i ended up buying this corsair RM650 psu yesterday but guess what this problem is still there......so this leaves me with only one prime suspect ---THE UPS!!!
But is there a possibility of any other component being the suspect???

 

[Wolfshadw]

Don't know how else to explain this, so apologies if I seem gruff.

Your computer, on load (while playing a game) draws, let's say, 425 watts of power from the power supply. Your UPS is essentially, a battery that can output a maximum of 360 watts of power. When you house power shuts off, your UPS automatically switches from sending power from the outlet to your computer (plenty of power) to running off it's battery (insufficient power).

Your computer, when in the middle of a game, requires, a theoretical, 425 watts of power and when the power goes out, your UPS cannot provide that much power. The typical result of this is a system restart.

Could it be any other component in your system? Absolutely. However, since this only happens when the power cuts out, it seems rather obvious that the issue is with the UPS. A simple test would be to leave the computer on, doing nothing. When the power cuts out, does it reboot when the UPS kicks in and the computer is doing nothing?

-Wolf sends

 

[BUlly_boy_2101]

Don't know how else to explain this, so apologies if I seem gruff.

Your computer, on load (while playing a game) draws, let's say, 425 watts of power from the power supply. Your UPS is essentially, a battery that can output a maximum of 360 watts of power. When you house power shuts off, your UPS automatically switches from sending power from the outlet to your computer (plenty of power) to running off it's battery (insufficient power).

Your computer, when in the middle of a game, requires, a theoretical, 425 watts of power and when the power goes out, your UPS cannot provide that much power. The typical result of this is a system restart.

Could it be any other component in your system? Absolutely. However, since this only happens when the power cuts out, it seems rather obvious that the issue is with the UPS. A simple test would be to leave the computer on, doing nothing. When the power cuts out, does it reboot when the UPS kicks in and the computer is doing nothing?

-Wolf sends

the pc shuts down only while gaming or benchmarking....when in logon screen or on desktop with no apps running it does not shut down.

 

[JackNaylorPE]

i do not think the psu is faulty because i just bought it yesterday!!!

You bought a RM650 yesterday, new doesn't mean working properly.

1. A certain % of power supplies are delivered DOA or with faults that warrant an RMA. In the past 6 month study period 1.55% of all Corsair PSU's were replaced under warranty
2. The RM series does not have very good build quality with a BQ rating of 7.0
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=363

the pc shuts down only while gaming or benchmarking....when in logon screen or on desktop with no apps running it does not shut down.

it only happens when there is a blackout

Now I am really confused...With a 1000 VA UPS you might have 1 minute to shut down your PC when running at full load before the battery is dead.... 6 minutes at half load

http://www.newegg.com/Product/Product.aspx?Item=N82E16842102082

So if it only happens "when there is a blackout", how many minutes are you expecting the battery to last with the vastly undersized UPS when you are gaming with a substantial load ?

Your UPS is sized for servicing a 300 watt PSU handing a 250 watt load and that's pushing it... Your GPU alone can pull 200 watts, your CPU 95 watts in gaming. Add 30 for MoBo, 20 for RAM and storage, 20 miscellaneous and you in 365 watt territory. Compensate for PSU efficiency at 87.5% and your UPS is seeing 420 watts.

The general rule of thumb is that your UPS VA rating should be about twice your actual max wattage I use a kil-o-watt meter to measure the wattage being pulled from the wall and multiply by 2 to get the VA rating.

When power goes out, you are on battery and the battery is simply not capable of delivering the wattage you need. If you had a 300 watts PSU pulling about 250 watts from the wall you'd be fine. You have a 650 watter pulling in excess of 420 watts from the wall ... and 850 works theoretically but I'd use a 1000VA unit.

Furthermore, forget about the battery, the circuitry in the UPS may not be capable of handling the load and tripping out. Also did you check your PSU....amd read the link to the UPS article I gave you above ?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139054

CORSAIR RM Series RM650 650W ATX12V v2.31 and EPS 2.92 80 PLUS GOLD Certified Full Modular Active PFC Power Supply

https://www.dougv.com/2010/03/active-pfc-enabled-psus-are-not-compatable-with-most-low-end-ups/

It turns out that most PC power supply units with active power factor correction (Active PFC) do not work well with lower-cost uninterrupted power supplies (UPS), e.g. battery back-ups....In short, if you send a high-end PSU the current created by a lower-end UPS, the PSU’s built-in power factor correction hates it, and cuts power to the PC immediately. As in, the exact thing you bought the UPS to prevent in the first place is exactly what happens.

 

[BUlly_boy_2101]

i do not think the psu is faulty because i just bought it yesterday!!!

You bought a RM650 yesterday, new doesn't mean working properly.

1. A certain % of power supplies are delivered DOA or with faults that warrant an RMA. In the past 6 month study period 1.55% of all Corsair PSU's were replaced under warranty
2. The RM series does not have very good build quality with a BQ rating of 7.0
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=363

the pc shuts down only while gaming or benchmarking....when in logon screen or on desktop with no apps running it does not shut down.

it only happens when there is a blackout

Now I am really confused...With a 1000 VA UPS you might have 1 minute to shut down your PC when running at full load before the battery is dead.... 6 minutes at half load

http://www.newegg.com/Product/Product.aspx?Item=N82E16842102082

So if it only happens "when there is a blackout", how many minutes are you expecting the battery to last with the vastly undersized UPS when you are gaming with a substantial load ?

Your UPS is sized for servicing a 300 watt PSU handing a 250 watt load and that's pushing it... Your GPU alone can pull 200 watts, your CPU 95 watts in gaming. Add 30 for MoBo, 20 for RAM and storage, 20 miscellaneous and you in 365 watt territory. Compensate for PSU efficiency at 87.5% and your UPS is seeing 420 watts.

The general rule of thumb is that your UPS VA rating should be about twice your actual max wattage I use a kil-o-watt meter to measure the wattage being pulled from the wall and multiply by 2 to get the VA rating.

When power goes out, you are on battery and the battery is simply not capable of delivering the wattage you need. If you had a 300 watts PSU pulling about 250 watts from the wall you'd be fine. You have a 650 watter pulling in excess of 420 watts from the wall ... and 850 works theoretically but I'd use a 1000VA unit.

Furthermore, forget about the battery, the circuitry in the UPS may not be capable of handling the load and tripping out. Also did you check your PSU....amd read the link to the UPS article I gave you above ?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139054

CORSAIR RM Series RM650 650W ATX12V v2.31 and EPS 2.92 80 PLUS GOLD Certified Full Modular Active PFC Power Supply

https://www.dougv.com/2010/03/active-pfc-enabled-psus-are-not-compatable-with-most-low-end-ups/

It turns out that most PC power supply units with active power factor correction (Active PFC) do not work well with lower-cost uninterrupted power supplies (UPS), e.g. battery back-ups....In short, if you send a high-end PSU the current created by a lower-end UPS, the PSU’s built-in power factor correction hates it, and cuts power to the PC immediately. As in, the exact thing you bought the UPS to prevent in the first place is exactly what happens.

based on your advices i am willing to buy a 1.5kva ups with stepped approximation of a sinewave...and hope it solves my problems.i just cant spend huge bucks for this pure sinewave ups. BTW thanks a lot for your support!!