Solved

Computer reboots after installing new Graphics Card

Hello, I've just installed a new GTX 770, I was trying out some games, when the computer suddenly reboots. I have a 700 W PSU, cheap one, that has 40 A on the 12V . I do not think it is that because it isn't too hot when the pc restarts, and as soon as it started up again I controlled the 770 temperature and it was around 35-40 celsius. Any ideas ? Thanks
5 answers Last reply Best Answer
More about computer reboots installing graphics card
  1. Cheap non-name brand PSUs are notorious for proving less than the stated Watts/ Amps. Try stress testing the CPU or GPU and see if you get the same results. If so then most likely PSU is to blame.
  2. I did the Valley and Heaven benchmark test, one after another, with this results

    Heaven

    FPS:
    43.1
    Score:
    1085
    Min FPS:
    7.8
    Max FPS:
    103.0
    System

    Platform:
    Windows NT 6.2 (build 9200) 64bit
    CPU model:
    Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz (3392MHz) x4
    GPU model:
    NVIDIA GeForce GTX 770 9.18.13.3182 (2048MB) x1
    Settings

    Render:
    Direct3D11
    Mode:
    1920x1080 4xAA fullscreen
    Preset
    Custom
    Quality
    Ultra
    Tessellation:
    Extreme

    Valley

    FPS:
    45.3
    Score:
    1894
    Min FPS:
    19.6
    Max FPS:
    85.6
    System

    Platform:
    Windows 8 (build 9200) 64bit
    CPU model:
    Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz (3392MHz) x4
    GPU model:
    NVIDIA GeForce GTX 770 9.18.13.3182 (2048MB) x1
    Settings

    Render:
    Direct3D11
    Mode:
    1920x1080 8xAA fullscreen
    Preset
    Extreme HD

    Temperature was 60 Celsius in both cases, yesterday I ran Battlefield 4 maxxed out and play for about half an hour and nothing happened, today I played Assassin's Creed 4 for about half our and it restarted.

    EDIT: When I connected the Card to the PSU, I used an old 6 pin to molex adaptor, it came in with my old 460GTS, could that be the problem ?
  3. Best answer
    it quite possibly could be the molex adapter. i have had an issue similar when the molex was not connected properly it would short out the system causing it to reboot which i believe is a fail safe to prevent the shortout doing damage to components.

    if your psu doesnt have the correct 6-8 pin plug for newer video cards i would recommend upgrading your psu to one with the right connector
  4. Inertia01 said:
    it quite possibly could be the molex adapter. i have had an issue similar when the molex was not connected properly it would short out the system causing it to reboot which i believe is a fail safe to prevent the shortout doing damage to components.

    if your psu doesnt have the correct 6-8 pin plug for newer video cards i would recommend upgrading your psu to one with the right connector


    It was that, it was because the molex were on the same rail, they had to be on different rails otherwise it'll short out the system. I'm upgrading to a corsair CX750 because it has a connector per rail, so it's ideal. Thank you !
  5. no worries glad i was able to help :) goodluck and happy gaming
Ask a new question

Read More

Power Supplies Computers Graphics Cards Graphics