Windows 8 and 8.1 Forums


Windows 8.1 black/blank screen after log in. No cursor

  1. #1


    Posts : 15
    Win 8.1

    Windows 8.1 black/blank screen after log in. No cursor


    Hey.
    I shut down my computer last night. It runs 8.1 and when I shut it down I do not believe it installed updates. I came home this afternoon and tried to boot it. It boots and after I type in my PIN, shows my desktop for a few seconds. Then, my display will either turn black or a blueish grey. There is no cursor. It does this every reboot now. I can not do anything except reset when it happens.

    System info:
    Two GTX 760's in SLI
    Two Asus monitors

    Possible culprits:
    1 - I have Actual Multiple Monitors trial installed. The freezing/display blanking seems to happen when the trial time left window shows up, but that may be coincidence.
    2 - I heard graphics card driver updates and windows updates can clash in some way and cause a similar issue. From what I've read, a cursor is still on screen and task manager can be opened with CTRL SHIFT ESC. Neither of these work for me.
    3- Virus? I have avast so I doubt it.

    Anyone got any clue what's wrong and how to fix it?

    specs: Intel Core i5-4670K, Gigabyte GeForce GTX 760 (2-Way SLI), Corsair 400R - current - lillz's Saved Part List - PCPartPicker

      My System SpecsSystem Spec

  2. #2


    Posts : 1,121
    Windows 8.1 x64


    With two large graphics cards, the size of the power supply is very important....what is the model number?

    What configuration are you running the dual monitors in. Are they both running from one video card, and which ports?
      My System SpecsSystem Spec

  3. #3


    Posts : 15
    Win 8.1


    I have a 750watt PSU, which is plenty for two 760's. I've had them both for awhile now. One monitor is on one card and the other on the other. One is display port and one is DVI.

    edit: noticed you asked for model #. It is a Corsair CX750M. You can view my full system at the end of the OP.
      My System SpecsSystem Spec

  4. #4


    Posts : 151
    Win8 Pro


    You need to start eliminating variables by the process of elimination. Disconnect both cards and monitors, then :

    Hook up card A to monitor A. Test. Then Card A to monitor B. Test.

    Etc etc.
      My System SpecsSystem Spec

  5. #5


    Posts : 15
    Win 8.1


    I know it's the not the cards, I can boot into Ubuntu. It is a definite windows system issue.

    edit: also I can stay on the log in screen as long as I want. Only when I actually log in does this happen.
      My System SpecsSystem Spec

  6. #6


    Posts : 151
    Win8 Pro


    Quote Originally Posted by Lillz View Post
    I know it's the not the cards, I can boot into Ubuntu. It is a definite windows system issue.
    It still could be a driver/resource conflict. Can you boot into safe mode? Try booting into safe mode and disabling one of the cards via device manager - then reboot normally with one card - is it normal? If not, reboot into safe mode, disable that one, reenable the other one, and reboot normally again, if neither work, and safe mode works, it's definitely a driver issue. If one works, but not both, again, it's a driver issue, try rolling back to more stable drivers, or updating, if that's what it needs. Or maybe I'm misunderstanding?
      My System SpecsSystem Spec

  7. #7


    Posts : 1,121
    Windows 8.1 x64


    The power supply appears to be large enough and probably has the Rail current needed.

    Did you put the monitors on the connections suggested in the Nvidia panel? You could try putting them on the same card but that would depend on the Nvidia panel.

    Also, are the monitors matched, or at least using the same resolution? What type of configuration are you running them in, like extended Desktop?

    I currently run three monitors on two GTX 680s in SLI which works fine in Spanned or individual displays. But of course, you can't span just two monitors.
      My System SpecsSystem Spec

  8. #8


    Posts : 15
    Win 8.1


    @lastof - I'll try safe mode now
    @saltgrass - I'm not sure what you mean by the connections suggested. One monitor is 16:10 and the other is 16:9. Like I said, I've had this sli setup for awhile now, so I think it's a driver issue...
      My System SpecsSystem Spec

  9. #9


    Posts : 15
    Win 8.1


    Update: safe mode works fine, no crash. Uninstalled Actual Multiple Monitors... is there a way I can check nvidia drivers and windows updates in safe mode? A reboot causes the same blank screen. It was grey this time. I forgot to mention earlier that when I had both monitors on (I turned one off), one screen would be grey and the other black. With one on, it is a grey screen.

    Update 2: Disabling one of the gpu's works, but now I can't enter nvidia control panel -- It doesn't think I have a display attached to a nvidia gpu.

    update 3: Renenabling the disabled one when in normal mode doesn't result in a crash, but if I reboot it crashes again.
      My System SpecsSystem Spec

  10. #10


    Posts : 151
    Win8 Pro


    Quote Originally Posted by Lillz View Post
    Update: safe mode works fine, no crash. Uninstalled Actual Multiple Monitors... is there a way I can check nvidia drivers and windows updates in safe mode? A reboot causes the same blank screen. It was grey this time. I forgot to mention earlier that when I had both monitors on (I turned one off), one screen would be grey and the other black. With one on, it is a grey screen.

    Update 2: Disabling one of the gpu's works, but now I can't enter nvidia control panel -- It doesn't think I have a display attached to a nvidia gpu.

    update 3: Renenabling the disabled one when in normal mode doesn't result in a crash, but if I reboot it crashes again.
    What drivers are you using? Did Win Update install them or Nvidia?

    EDIT: The first thing I would do is make sure the cards are working properly with Windows before dealing with the Multiple Monitors app; I didn't realize this was a seperate application until right now - and I suspect this is probably the problem - for now, I would uninstall it, and attempt to get the cards working first. Then go from there.
      My System SpecsSystem Spec

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Windows 8.1 black/blank screen after log in. No cursor
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