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Odd loss of power

post #1 of 14
Thread Starter 
Ive read through a few posts about similar issues, but thought I'd ask because I think my issue is a bit different.

I am assuming its the power supply, but a few things are throwing me off. First off:

8350
M5A97 r2.0
MSI R9 270x
16gb ram (Tested with memtest for 24 hours)
Kingwin 660w power supply

I am gettings random losses of power. No bsod, or errors. Event viewer just says the computer lost power unexpectedly. Its fairly random, usually happens 2-3 times a week while doing anything, browsing facebook, playing games, or even just idle. BUT I am able to force it by playing Grim Dawn. This is throwing me off as I can play Overwatch all day, using 99% GPU and anywhere from 30-40% of CPU, where grim dawn might hit 30% GPU and 20% CPU. If it were a power supply issue I would assume that using more resources, and more power, would cause more issues, but everytime I play Grim Dawn it happens. Anywhere from 10-20 minutes of playing causes it. Temperatures are fine, highest temp is the vrms at 60C heatsink temp under load. Also, to turn it back on I have to flip the switch on the power supply, leave it off for a few seconds. When the PC loses power the light on my usb gamepad stays lit, and I have to leave the switch on the PSU off until that light goes out.

I am just wanting to see if you guys think its anything else before I spend the money on a new PSU.

Thanks! cheers.gif
Edited by Darrath - 8/6/16 at 2:51pm
post #2 of 14
I'm going to take a guess that it's a crap PSU. Random shutdowns with no BSODs tend to indicate a power issue. Looking at its specs on Newegg, we get:

  • Up to 78% efficiency (but later on it says >78%, so I don't know which they mean)
  • Mechanical switch to change between 115V and 230V input
  • Reviews dating back to 2009 indicate it's old
  • LEDs are never a good sign tongue.gif


It doesn't look like a good PSU in the first place, even for 2009, and they do degrade over time. A couple years on a high-end PSU won't do much, but nearly a decade for something much cheaper will take its toll.

As for the light on the game pad, that isn't out of the ordinary. USB is often powered by the 5VSB rail, 5 volt standby, which is powered whenever the system is connected to a wall outlet. My keyboard's various lock lights will do the same if I've just plugged the system in and haven't booted it yet.
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Triumvirate
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post #3 of 14
Thread Starter 
I see, I know its not a great psu, got it on sale for $60 back in 2010... And its been the only thing that hasn't changed in my PC since then. I just thought that drawing more power would cause it more... But only a certain game can guaranteed cause it and its not a power hungry game.

Thanks, Ill start looking into a new power supply.
post #4 of 14
You dont need more then a good 550 watt PSU for the system you have so dont go out and buy something like the cheapest 1000 watt PSU you can dig up

Your best options are either the Corsair RMx or the EVGA SuperNova G2
If you dont have that much money there is the Corsair CX550 (not the CX500) and the Corsair CS550 which are worse but also cheaper.
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post #5 of 14
Thread Starter 
Yeah, price is a little bit of a factor, but I was looking at the XFX XTR 750w. Can get it here in Canada for about $120 shipped. I am moving back down to the states in about a month, so I can put up with it for a while if I can find a decent PSU for cheaper. I just prefer modular, and planning on either a 1080 or the AMD equiv in the next 6 months or so too.
post #6 of 14
You dont need a 750 watt PSU unless you are going to add another video card or BIOS volt mod the one you have
If you can get the 550 watt for less then the 750 watt there is really no need to spend that extra amount

As for the XFX XTR its a fully modular version of the Seasonic G with a hybrid fan mode added to it.
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post #7 of 14
Your PSU might be getting too hot. I've had the same issue that you described and found my PSU wasn't getting fresh air so it was shutting off to prevent damage. I propped my case up off the floor an inch or so (bottom of case mounted PSU) and haven't had a single problem since doing that 2 months ago.
post #8 of 14
Thread Starter 
I am having a hard time finding 550w power supplies. I don't see the corsair RM or Supernova G2 ones in 550w at Microcenter, Tigerdirect, or Newegg. All I am seing is 750w+ I see the 550w on Amazon for $90, but at that point I may just spend the extra $30 for a 750w supply. Just in case I ever do SLI or something.

I know very little about power supplies and am stuck between waiting until I'm back in the states or getting one here in Canada. It looks like most decent PSUs are around $100 anyway, so $120 isn't bad for that XFX is it?

Thanks!cheers.gif

Also, SLI is not out of the question in the future, if $30 more means I can do that if I decide, then I'd prefer that.
Edited by Darrath - 8/6/16 at 4:38pm
post #9 of 14
Thread Starter 
Quote:
Originally Posted by nugget toes View Post

Your PSU might be getting too hot. I've had the same issue that you described and found my PSU wasn't getting fresh air so it was shutting off to prevent damage. I propped my case up off the floor an inch or so (bottom of case mounted PSU) and haven't had a single problem since doing that 2 months ago.

I did think of that, but immediately after it lost power I felt the PSU and it was cool on every side. I do have about an inch of space under my tower, and its on a small table I built with spaces between the boards for more airflow. thumb.gif
post #10 of 14
Thread Starter 
Ended up ordering a Supernova G2 here in Canada, thanks for the advice! cheers.gif
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