I cannot get to my OS with graphics card installed, when I take it out I can.

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Steven545

Steven545

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Sep 1, 2014
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Specs:
-Windows 8.1 64-bit
-i5-4750 CPU @3.20 GHz
-8.00 RAM
-Intel HD Graphics 4600 (with video card uninstalled)
-NVIDIA Gefore 760 (video card with problems that I'm trying to install)


About a month ago my graphics card (randomly) wouldn't work with my system. Every time I went to boot my computer I would get as far as the windows 8.1 logo and cannot get to my desktop/smartscreen. Instead where I can usually see my desktop my monitor goes black and tell me to "check video card" and then goes to sleep. I can still hear the fans running and everything but I'm just sat at a black screen. When I take out my graphics card my computer works and boots up fine.

I called my computer manufacturer to replace my video card. Before they shipped it back to me they said it "tested fine and they replaced the vga card." I just got the graphics back today and it's doing the same exact thing as before I shipped it to them.

I've tried a different monitor and I've tried using HDMI instead of DVI and still get the same error. I've also reinstalled windows 8.1 which by no surprise did nothing. I can't find any solutions on the internet, I'm coming here as a last hope. I'm open to any suggestions.
 
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NightAntilli

NightAntilli

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Jun 12, 2014
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Looking at the specs and reviews on that PC, the PSU is quite crappy. It's a tier 4 PSU (LEPA MX-F1). There are reports that the system crashes with a GTX-660 when just watching movies. If that's really the case, it means the power supply can not support your GTX-760 for long periods of time, and it might have lost some capacity due to running at a higher power than it actually can. As of now, the main suspect of your problem is your power supply.
 
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Steven545

Steven545

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Sep 1, 2014
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Yeah, I tried both the DVI and HDMI ports on the graphics card on two different monitors.



I assume this could be the case, although I'm not completely sure why. My GFX is supposed to handle 500W. Pretty frustrating.
 
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NightAntilli

NightAntilli

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Jun 12, 2014
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If you have any way of borrowing one from someone, try out another power supply. I personally think you should replace the current one anyway since it's not good quality. In the worst case, it can even damage your components. But I understand if you're not able/willing to spend money on something that does not guarantee to solve your problem. I think it's highly likely the PSU though. If I had to pick a number, I'd say 80%+ chance it's your power supply.

Maybe there's a way for determining it... Do the following;
- Remove the graphics card
- Connect your monitor to the onboard graphics card
- Boot up and go into your bios
- Downclock your CPU to around a quarter its speed (~0.8 GHz) or lower by decreasing the multiplier and/or FSB.
- Reboot to see if your PC still starts up normally
- If it starts normally, shut the pc down and reinstall your graphics card
- Try to boot it now, to see if the lower power usage from your CPU allows your graphics card to work. If it does, it's definitely your power supply.

Again, whether it's the PSU or not, I recommend you to upgrade it.
 
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Steven545

Steven545

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Sep 1, 2014
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Hi, I appreciate your long and detailed response. First time I had hope for my computer in a while. I actually went to the Q&A section on my computer and saw some people actually had trouble with the PSU like you're saying (500W is bare minimum for my GFX anyway) and I really don't mind upgrading my PSU because they seen cheap. I'm going to talk to my manufacturer and see if they will send me a PSU to test since I'm still under warranty. Maybe I'll end up buying the new one and sending back the old.

As for the second part of your response I got lost at: "- Downclock your CPU to around a quarter its speed (~0.8 GHz) or lower by decreasing the multiplier and/or FSB." Sorry, I only know the basics of computers and I'm willing to try what you said but I honestly don't know what downlocking means. If you can dumb that down for me I would totally try it. If not I still appreciate the help. Thanks again.
 
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