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Random black screens

By giostyl
Jul 27, 2016
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  1. Hello,

    I have been having a lot of black screens, my computers starts up fine. This problem has never occured before and just started happening recently. When my screen turns black I hear a disconnect sound. My Nvidia drivers are up to date. There doesn't seem to be a specific trigger either, just happens randomly, sometimes when browsing the web and other times when gaming.

    Here are my pc specs

    Intel core i7 4770k (water cooled)
    16 gb ram
    Gigabyte 980 windforce oc
    Windows 10 64bit
    Samsung 850 EVO 240gb and samsung 840 EVO 120Gb
    Two western digital HDD's 1TB and 2TB
    700 (could be 750 but I forgot) watt psu
    MSI Z97 Gaming 5

    Thank you,
    Giovanni
     
  2. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    Please use a utility to track temperatures and voltages - need range (min and max).

    My guess is 'heat', so use the system for 30 minutes before capturing the ranges.
     
  3. giostyl

    giostyl TS Rookie Topic Starter

    Here are some screenshots when using HWMonitor. Utility1.png Utility2.png Utility1.png Utility2.png Utility1.png Utility2.png
     
  4. giostyl

    giostyl TS Rookie Topic Starter

    Here are the results again but I waited about 45 min without closing the program to get better results. Utility 3.png Utility 4.png
     
  5. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    The EVO 850 is a little warm - probably need to clear the ventilation path (cables, etc), but the +12v with min of +11.0v and max of +11.176v is way below specification.

    Inspect wiring and connectors very carefully, remove and reinstall video card and power connectors and check again. If you have a multimeter, check the 12v rail. 12v should range 11.92v to 12.08v.

    We are looking for anything which might be messing up that rail - but it is likely you need a new PSU.

    MSI has a PSU calculator which could help.
     
  6. giostyl

    giostyl TS Rookie Topic Starter

    Could you please explain what you mean by "but the +12v with min of +11.0v and max of +11.176v is way below specification"
     
  7. giostyl

    giostyl TS Rookie Topic Starter

    Since this probably is a psu issue, I think I should mention that my room doesn't have grounding. I get shocked quite often by usb ports.
     
  8. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

  9. giostyl

    giostyl TS Rookie Topic Starter

    Is there something I can do about the +12v thingy? Maybe it is underpowered because of the psu? I hope so because it's a recent motherboard so it's a shame if it only lasted a couple of months. Thank you for the help so far.
     
  10. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    Yes, Follow steps outlined above. If not fixed and voltage tests at less than 11.4v, replace PSU.

    We are looking for anything which might be messing up that rail - but it is likely you need a new PSU.

    MSI has a PSU calculator which could help.
     
  11. giostyl

    giostyl TS Rookie Topic Starter

    Is it normal when having a black screen that the audio keeps going?
     
  12. giostyl

    giostyl TS Rookie Topic Starter

    I have already ordered a new psu, so hopefully that solves the problem but I think it's weird that the sound continues or is it the gpu which loses power and shuts down?
     
  13. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    Repeating: Please correct your grounding problem before you become a crispy critter.
     
  14. giostyl

    giostyl TS Rookie Topic Starter

    Just replace my psu and nothing changed, I still only have 11v on the +12v rail.
     
  15. giostyl

    giostyl TS Rookie Topic Starter

    I just noticed that my pc now also makes hissing noises and when I stress test my gpu using furmark I hear a buzz.
     
  16. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 1,657   +309

    No. In my experience, it can happen if there is a problem with the audio driver OR with the video hardware.

    Just replace my psu and nothing changed, I still only have 11v on the +12v rail.

    What did the multimeter show?


    I just noticed that my pc now also makes hissing noises and when I stress test my gpu using furmark I hear a buzz.

    Repeating: Please correct your grounding problem before you become a crispy critter.


     

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