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How to tell if PSU is failing?

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April 4, 2013 9:31:30 PM

I've been having issues with my PC where it randomly lags - audio and video- during normal use. By normal use I mean not gaming, just browsing the Internet or watching a video on YouTube, it will lag really badly for about 1 second and then goes away but comes back after another few seconds.

I thought my gear was failing so I upgraded my hardware but not my PSU. However, this still appears from time to time (although less frequently than my old gear). I'm starting to think its my PSU that's starting to fail.

Also, I've noticed that if I play games (LoL, Tomb Raider, etc.) and use my GPU's fan, it seems like my WirelessLAN card dies (from no power) and my internet connection resets. I've stopped using my GPU autocooling feature because of that.
Does anyone have an idea if it is my PSU failing?

My PSU is about 5-6 years old, an old BFG 600W PSU. My graphics card is a HIS IceQ 7870 Radeon HD (monster graphics card).

Any ideas or suggestions?

More about : psu failing

April 4, 2013 9:46:02 PM

Almost guarantee a dying PSU -- I had a BFG 550 and had similar issues (not a catastrophic failure, but intermittent)

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
This PSU tester could confirm something that should already be obvious. The only component in your machine now that isnt new is the PSU, and you have the same symptoms as before.

Not that it isnt possible to last that long, but 5-6 years, I wouldnt loose any sleep if my PSU died at that age
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April 4, 2013 10:36:32 PM

any recommendations on new PSU's? I'm looking to upgrade to a 700W and I know all the name brands are good but I don't know what's a decent pricing range for a 700W name-brand (Corsair, Thermaltake, Antec, Cooler Master, Rosewill) PSU.
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April 4, 2013 11:53:43 PM

Look at the who's who in PSUs article from a few months ago (here on TH). You'll notice that many models use seasonic insides under a diff brand (ie: Corsair HX650). Note that it isnt based on series, but specific model within series (ie: the Corsair HX850 doesn't have seasonic inside). So, I picked my psu by comparing 650W models with seasonic insides that had the lowest price (while still having a reasonable warranty). You can do something similar for your brand of choice.
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June 21, 2014 9:09:35 AM

Sorry to reply on a year old post but did you ever find out if the PSU was at falt? I'm having the exact same problem and my PSU is 5/6 years old. My rig in itself is pretty much that old other than a few upgrades here and there. My system was running fine until last week and now this A/V stuttering appeared. I am running HWmon right now but dont know what to make out of it. In the M/b voltages (nForce 790i Ultra) the VIN2 voltage value is constantly fluctuating. Unfortunately I dont know what VIN2 stands for.

Can someone help out?

Thanks.
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June 21, 2014 11:41:34 AM

digikaos said:
Sorry to reply on a year old post but did you ever find out if the PSU was at falt? I'm having the exact same problem and my PSU is 5/6 years old. My rig in itself is pretty much that old other than a few upgrades here and there. My system was running fine until last week and now this A/V stuttering appeared. I am running HWmon right now but dont know what to make out of it. In the M/b voltages (nForce 790i Ultra) the VIN2 voltage value is constantly fluctuating. Unfortunately I dont know what VIN2 stands for.

Can someone help out?

Thanks.


I ended up replacing my entire rig; mobo, gpu, psu, cpu, even ram. The problem was still there for about a week or so, on and off but after that my rig has been running smoothly with no sign of those issues anymore. I suggest replacing your PSU anyway since it's around 5-6 yrs old. If the problem still persists, then I would say its your mobo.
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June 21, 2014 12:33:25 PM

Thanks for the reply :) . As of now the problem gets worse when I play a game. Only playing Diablo 3 on the comp and after I quit the whole comp kinda slows down. Taking time to render views etc. Your guess may be right. Its either the mobo or the PSU. I'm just gonna let it play out I think unless I cant take it anymore or something eventually fails. Mainly because if its the mobo then I have to change that and along with it get a new CPU and new RAM and I'm not ready for that expense right now.

Are there any other software programs that can help identify a problem? I cant make any sense from the numbers in HWmon. I need an app that I fire up, it analyzes the comp and then says what the problem is. hehehe. That'll be awesome :p 
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June 21, 2014 12:47:38 PM

Only get a cooler master or seasonic PSU and non other, rest all have serious issues !
If still problem persists then check your mother board !
By the way try to set the audio out to stereo for both the card and monitor or tv !!
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