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PC turns on, no display, case fan off, mouse on, keyboard off. Sometimes boots fine.

Hey guys, here's my story:
I was playing a game. PC shutdown completely, no blue screen or anything, immediately turned back on, with no display.
Upon opening the case and retrying to turn it off and on i noticed some seemingly random components weren't turning on. For example, the monitor didn't get display, the mouse was on, the keyboard was off, the back fan of the case was off. Some other times different stuff turned on/off.
This happened last night. This morning, before coming to work i quickly turned it on just to see what would happen and it just booted normally.

I've tried:
-Unplug and plug the RAM
-Unplug and plug Mobo's power cable. (after doing this it turned on fine but i tried restarting and the problem was back)
-Connecting the monitor to the Mobo's panel, still no display (GPU was still connected when i did this so i'm not sure if it would have shown anything anyway)

I found a dumb workaround that works. Hopefully it helps finding the problem.
Turn on PC with case button, if the issue happens, quickly turn off and on the on/off switch on the PSU. By doing this the case fan starts working, and it seems the PC just turns on normally, with display, mouse, keyboard, and all that.

From what i gathered from research on this, it seems like it's either Mobo or PSU related. So, what seems to be the problem?


UPDATE: unplugging the USB 3.0 cable from the Mobo seems to make it so it turns on fine. When i pugged it back in, it had the same issue. Could it be that by unplugging the cable it's requiring less power and thus it works fine?
8 answers Last reply Best Answer
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  1. Best answer
    it sounds like a PSU issue that its about to die from what you said at the end with usb
    PSU Tier list tier 1-2 are good for gaming
    http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

    I would recommend an EVGA SuperNova Gold G2 / GS / GQ, Platinum P2 / PS, or Titanium T2 or a Seasonic M12-II Evo or S12-II

    GOOD PSU EVGA is a B2, G2, P2, GS, PS, or T2. Avoid the EVGA B1 and G1 series
  2. RARRAF said:
    it sounds like a PSU issue that its about to die from what you said at the end with usb
    PSU Tier list tier 1-2 are good for gaming
    http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

    I would recommend an EVGA SuperNova Gold G2 / GS / GQ, Platinum P2 / PS, or Titanium T2 or a Seasonic M12-II Evo or S12-II

    GOOD PSU EVGA is a B2, G2, P2, GS, PS, or T2. Avoid the EVGA B1 and G1 series

    Oh i just realized i forgot to post my PC parts. Here they are https://pcpartpicker.com/list/3kNMr7
    Which PSU would u recommend for that setup, and that will also handle well a future upgrade to a gtx1070?
  3. well something 550 or above in tier 1 or 2 that is reasonably cheap the first post has a list of good PSU's
  4. RARRAF said:
    well something 550 or above in tier 1 or 2 that is reasonably cheap the first post has a list of good PSU's


    Alright, thanks.
    This one, for example, yeah? https://www.amazon.es/gp/product/B017NW4P1M/ref=ox_sc_act_title_1

    And i was wondering, what could have caused the PSU to die so early. It's barely 2 years old.
  5. Yeah that is a great tier 1 PSU with 5 year warranty / as for what could cause a PSU to die so early not really too sure some last a long time others not so long.
  6. RARRAF said:
    Yeah that is a great tier 1 PSU with 5 year warranty / as for what could cause a PSU to die so early not really too sure some last a long time others not so long.


    Yeah, my current one is a bronze tier one, but i had checked the number they give you of like, how long before it should start having issues, and it said 100,000 hours. Making some calculations i quickly realized that even 24h a day for the ~2 years i own it wasn't even close to that.
    I'm thinking maybe power outages that happen in my place from time to time could be the cause. I've heard that's bad.
  7. maybe well lets hope this one outlasts it should do with a five year warranty.
  8. RARRAF said:
    maybe well lets hope this one outlasts it should do with a five year warranty.


    Yeah, let's hope so. Thanks for the help, friend.
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