Window's 10 won't boot with gtx 780ti inserted

Hello, I was recently playing league of legends and the first two games were fine on my third game when I loaded into game everything started to freeze,lag and make weird colors when I went to alt tab to close out the game my entire pc froze so I had to restart it. I tried a few more times before saying this wasn't worth it. I ended up doing a factory restore and in all my time using computers and doing one I have never had it delete my OS which it did I have installed a new windows 10, but when I get to the windows menu on the times it would boot after a couple of seconds the computer screen would go black and it would restart.

The times I have gotten it to boot windows 10 with the 780ti inserted and checked device manager it under display it would only show a basic graphics adapater. Finally after a lot of messing around I have installed nvidia drivers in safe mode with networking, but that didn't seem to work. The computer will work just fine if I take out the 780ti and plug in my monitor to the motherboards graphics. The current part I am at right now is I have the computer in safe mode and it appears to be using my graphics card because the resolution is 2560 x 1440 as well as when I go to the device manager and check display adapters it will list my 780ti. Also one thing is when I boot the pc normally while the 780ti is inserted is when it would be time for windows 10 to load it will have a greenish line with some blue at the top of the monitor.

My other specs are:

intel(R) Core (TM) i7-4770K CPU @ 3.50GHz
16GB Ram
GTX 780 Ti
I have a 750w PSU
Asus VII hero motherboard

I have also read a bunch of topics already about graphics cards on here and nothing seemed to help so far most of them were about installing new gpus which I am not doing but since it was a clean install of windows on a new SSD I don't know if it still counts as new.

Edit: One thing else is I downloaded this new windows 10 but I didn't have an activation key I don't know if that will matter I was going to use a program to pull my old product key from my bios as i read you could do that if not then i'l have to buy a new copy.


Update: While in safe mode with the gpu working I went to device manager and disabled my 780ti then restarted the pc and it it booted up windows 10 just fine withe the default background not a black screen. as well as in my gpu's resolution. Then i tried to enabled it again and it went black and windows would not boot again so I disabled it again in safe mode and it's working. I just don't understand now is my gpu actually disabled and if it is why does it appear to be using it.
Reply to tsunamicbeast
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More about window boot gtx 780ti inserted
  1. Update your BIOS. If it's already updated, go to Video/Display/Advanced settings, search for Primary Display option, and change it to Auto/PCI-E. You should do this while your GPU is removed.
    Reply to Gahl1k
  2. Gahl1k said:
    Update your BIOS. If it's already updated, go to Video/Display/Advanced settings, search for Primary Display option, and change it to Auto/PCI-E. You should do this while your GPU is removed.


    Hello, thank you for your reply I have done as you said. Then when I turned on the pc with my monitor hooked up to my GPU windows loaded and I logged in only for it to instantly go black and I tried to restart it but now windows will not load again. I updated the bios to the currently version. The pc works just fine as long as my GPU isn't inserted into the motherboard. I really don't know too much about hardware myself. The gpu seems to work fine in safe mode.

    Update: While in safe mode with the gpu working I went to device manager and disabled my 780ti then restarted the pc and it it booted up windows 10 just fine withe the default background not a black screen. as well as in my gpu's resolution. Then i tried to enabled it again and it went black and windows would not boot again so I disabled it again in safe mode and it's working. I just don't understand now is my gpu actually disabled and if it is why does it appear to be using it.
    Reply to tsunamicbeast
  3. Can you uninstall your GPU drivers, and install them again?
    Reply to Gahl1k
  4. Gahl1k said:
    Can you uninstall your GPU drivers, and install them again?


    I have uninstalled the driver and installed it back then when i try to boot it normally it gives the same black screen and doesn't load windows. The only way to get it to normal boot while the gpu is inserted into the slot is if the device is disabled. Then I can surf the net download stuff it all works as long as the gpu is disabled. I used the newest driver from the nvidia site.
    Reply to tsunamicbeast
  5. OK. Try disabling Fast Startup in your Power Management options in Control Panel:
    Control Panel > System and Security > Power Options > on the left side, click on 'Choose what the power buttons do' > Click on 'Change settings that are currently unavailable,' then uncheck the 'Turn on fast startup' option > see if the issue still persists.
    Reply to Gahl1k
  6. Gahl1k said:
    OK. Try disabling Fast Startup in your Power Management options in Control Panel:
    Control Panel > System and Security > Power Options > on the left side, click on 'Choose what the power buttons do' > Click on 'Change settings that are currently unavailable,' then uncheck the 'Turn on fast startup' option > see if the issue still persists.


    Sadly that didn't seem to help at all at this point I am starting to think it died while I was loading into a game since windows won't boot or show the screen when trying to load while it is enabled.

    Update: right now it will load normally and let me sign in but after a couple of seconds the screen goes black.
    Reply to tsunamicbeast
  7. OK. Try this:

    Click on Windows logo key + P, click the downward arrow 3 times, then Enter.
    Reply to Gahl1k
  8. Gahl1k said:
    OK. Try this:

    Click on Windows logo key + P, click the downward arrow 3 times, then Enter.


    when I do that it says "your pc can't project to another screen. try reinstalling the driver or using a different video card."

    I tried it in safe mode with the gpu enabled and in normal mode with gpu disabled because I can't get into normal mode while my gpu is enabled.
    Reply to tsunamicbeast
  9. You should do it while having the black screen.
    Reply to Gahl1k
  10. Gahl1k said:
    You should do it while having the black screen.


    Just tried that and nothing seemed ot happen my monitor's light goes from blue (active) to red (inactive) after i enable my gpu. Then I tried to restart it and see if I could get it to boot then go black so I could try again but it didn't work eventually just leads to me needing to use safe mode.
    Reply to tsunamicbeast
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