Computer:
Dell Optiplex 780 MT
Win 7 64-bit
305w PSU (OEM)
I swapped video cards yesterday in my Dell Optiplex 780 MT. I previously had an nVidia 8800 GT and I replaced it with an nVidia GX750TI. I tin-snipped a few squares from the back of the case so that it would fit.
Process: Removed the nVidia drivers installed in the computer, shut down, removed the 8800 GT, installed the GX750TI. It started up and Win 7 auto detected and installed the card. I then installed the current drivers from EVGA (337.88 WHQL). Rebooted and it froze a few seconds after logging in. By freeze I mean that the mouse pointer still moves, I can toggle the keyboard lights, but nothing responds on the monitor. Can't Ctrl-Alt-Delete to bring up the task manager, nor click on anything, etc.
I rebooted into safe mode thinking maybe the auto detect messed something up. In safe mode I removed all the drivers (except the nVidia physek driver which said it could not be removed in safe mode). I reinstalled the drivers from EVGA. Rebooted.
System came up fine. I was able to open up Skyrim and play for about 20 minutes or so and then the computer froze again.
Now it freezes every time about 2-3 seconds after logging in. I have booted into safe mode and uninstalled/reinstalled drivers but that hasn't fixed anything. On a whim I swapped cards back out (put the 8800 GT back in) but the system still locks up.
I thought perhaps I had a memory stick go bad (coincidentally at the same time I replaced the video card?), and pulled one then the other, but no change.
I am curious if perhaps the PSU was stressed, even though from reports I have read that the GTX750TI has a very low power draw and a 300w PSU is enough. But if it did, would it cause this type of behavior?
Any ideas of things I can check?
Thank you
Dell Optiplex 780 MT
Win 7 64-bit
305w PSU (OEM)
I swapped video cards yesterday in my Dell Optiplex 780 MT. I previously had an nVidia 8800 GT and I replaced it with an nVidia GX750TI. I tin-snipped a few squares from the back of the case so that it would fit.
Process: Removed the nVidia drivers installed in the computer, shut down, removed the 8800 GT, installed the GX750TI. It started up and Win 7 auto detected and installed the card. I then installed the current drivers from EVGA (337.88 WHQL). Rebooted and it froze a few seconds after logging in. By freeze I mean that the mouse pointer still moves, I can toggle the keyboard lights, but nothing responds on the monitor. Can't Ctrl-Alt-Delete to bring up the task manager, nor click on anything, etc.
I rebooted into safe mode thinking maybe the auto detect messed something up. In safe mode I removed all the drivers (except the nVidia physek driver which said it could not be removed in safe mode). I reinstalled the drivers from EVGA. Rebooted.
System came up fine. I was able to open up Skyrim and play for about 20 minutes or so and then the computer froze again.
Now it freezes every time about 2-3 seconds after logging in. I have booted into safe mode and uninstalled/reinstalled drivers but that hasn't fixed anything. On a whim I swapped cards back out (put the 8800 GT back in) but the system still locks up.
I thought perhaps I had a memory stick go bad (coincidentally at the same time I replaced the video card?), and pulled one then the other, but no change.
I am curious if perhaps the PSU was stressed, even though from reports I have read that the GTX750TI has a very low power draw and a 300w PSU is enough. But if it did, would it cause this type of behavior?
Any ideas of things I can check?
Thank you
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