Random PC Shutdown

bigalbroski · Dec 5, 2013

About a month ago I got new parts (mb, cpu, ram) for my pc since then almost everyday my pc will randomly shutdown with no blue screen. I've monitored the temperatures and the highest anything gets is 55 Celsius and I'm wondering if my motherboard or cpu are bad.

New Motherboard: ASUS SABERTOOTH 990FX R2.0
New Cpu: AMD FX-8350 Vishera 4.0GHz
New Ram: G.SKILL Ripjaws X Series 16GB
Old Gpu: EVGA DS SuperClocked 01G-P3-1567-AR GeForce GTX 560 Ti (Fermi)
Old psu:Rosewill Xtreme Series RX750-S-B

Onus · Dec 5, 2013

If that's a real old PSU (does it have a little voltage switch?), it may be from the days Rosewill was not known for quality PSUs; that plus its age may mean it is no longer able to power your rig, so it shuts off. Check the Windows Event Logs. Software issues will typically generate log entries, but bad power will not, other than that there was an unexpected shutdown.

John Sebastian · Dec 5, 2013

your power supply got the problem,how old is your psu?

Mohammad Hussein · Dec 5, 2013

An old PSU can actually cause random shutdowns if its not functioning properly. I would take a look at that first and more than likely thats what it is.

bigalbroski · Dec 5, 2013

I've updated the psu information, it is from November 2011. The only problems that Windows Event Viewer shows are what seem to be java errors.

Mohammad Hussein · Dec 5, 2013

According to the details this psu's 12v connectors max out at 20 amps and that nvidea card requires 24 amps. So that is probably the issue. Whenever your card tries to draw 24 amps your psu is shutting down.

bigalbroski · Dec 5, 2013

How would I just now be experiencing problems, the Power supply and graphics cards are from my old build which I never had any problems with.

Mohammad Hussein · Dec 5, 2013

Sometimes putting in new parts to a built that is old is not a good idea because you are using new parts with old equipment and its not recommended to do that. Maybe that psu worked with your old setup but with your new one its not performing too well because its not as efficient as it was when you have bought it and it was brand-new. So your best option would be to get a new psu and make sure its a good brand because without a good psu your system will tank.

Onus · Dec 5, 2013

Is it this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16817182067 ? If so, that's not old, and is unlikely to suck, at least not hard enough to be the source of your problem.

I've never known Java to crash a machine; browser maybe, but not the whole PC. This is odd...

bigalbroski · Dec 5, 2013

Onus :

Yes, that is the power supply, I also update my original post with the exact video card since its discontinued and seems to be an odd version of it.

Mohammad Hussein · Dec 5, 2013

bigalbroski :

"CAUTION: this power supply 12v connectors max out at 20amps. The new NVidia cards require 24amps! I had problems with my pc shutting down on me during games. Found out my NVidia GTX560 requires minimum of 24amps on the two 12v plugs. When the card tries to draw over 20amps, the power supply shuts down. I thought it was the video drivers, but no, it was my power supply.
Other Thoughts:
BE SURE YOU CHECK THE AMP RATING ON YOUR VIDEO CARD BEFORE BUYING A POWER SUPPLY."

and also I had experience with this sort of thing before because I used an old PSU in a new rig and it kept shutting down.

Onus · Dec 5, 2013

The video card gets up to 75W (6.25A) from the PCIe slot. The PSU is a single-rail unit, so individual wires aren't current-limited. Dangerous in near-short conditions, but the PSU isn't being abused by his rig.

Mohammad Hussein · Dec 5, 2013

Onus :

Well that is true but also Rosewill psu's are not considered the best brand and I have bad experiences with them.

bigalbroski · Dec 5, 2013

I'm not sure if it makes any difference by my gpu has two seperate 12v connectors connected to it and I have two other 12v connectors that aren't being used. Also should turn off some cores on my cpu to pull less power?

Mohammad Hussein · Dec 6, 2013

The thing is if you want to play next gen games that more going to be more demanding you will want to have a good PSU anyways. Trying to pull off other alternatives might work but can also be risky. If I were you I would just get a new PSU and avoid any future complications. The 750W Thermaltake smart M series is a good PSU for the price and I have been running it for over 4 months.

bigalbroski · Dec 6, 2013

How do you tell how many amps a 12v rail had because it says it has 60amps on the powersupply?

Onus · Dec 6, 2013

There is only one +12V rating (60A) on your PSU, which means it only has a single rail. Multi-rail PSUs will have multiple entries, each one showing the maximum current that rail supports. Note that these are NOT strictly additive, but represent where their current-limiters are set. There should also be a figure showing what the maximum TOTAL +12V amperage is. Look at assorted PSU labels for examples.

bigalbroski · Dec 10, 2013

Onus :

Sorry if this is too old of a forum post but after running my system and monitoring what it does I've noticed that the shutdowns only happen after my computer goes into sleep mode. I also just got a popup warning saying something like +3.3V is at 3.846 or 3.384 (Not sure which one it said) would that mean my system is pulling to much power? If needed I can screenshot and post my systems current power usable from AI Suite.

Mohammad Hussein · Dec 12, 2013

Yes, like I said before your PSU needs replacing for these issues to go away and pick a good and trusted brand such as Corsair, Seasonic and thermaltake. On tiger direct you can get a corsair 750W for 120 dollars which is a great good deal!

Onus · Dec 12, 2013

This is NOT a PSU issue, especially if it only happens when the PC sleeps. Software measurement of PSU voltage is notoriously inaccurate. Most likely, the PC has a driver problem. Check the Windows Event Logs and see if it shows what is crashing.
If the PC simply won't wake up, e.g. when the mouse is moved, try pressing Ctrl-Alt-Del; that may wake it up.

bigalbroski · Dec 12, 2013

Onus :

The PC turns back on after going into sleep but after a few hours of being woken up is when the shutdown happens. The only Critical error I could find in Window Event Viewer is "The last sleep transition was unsuccessful. This error could be caused if the system stopped responding, failed, or lost power during the sleep transition."

Random PC Shutdown

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