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Computer not starting with Graphics Card installed. Graphics Card works in another Computer.

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  • GPUs
  • Computers
  • Graphics Cards
  • Graphics
Last response: in Graphics & Displays
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September 2, 2014 10:46:10 AM

I have been using this computer for a year.
Intel Core i5 3330
4GB DDR3 1333 RAM (One Stick)
ZOTAC Nvidia GTX 650ti 1GB GDDR5
Gigabyte H61 S1 Motherboard
Cooler Master 500W PSU
For the last month, the computer had been finding it difficult to boot. Takes four to five attempts of pushing the power button and then it finally boots. Then, it stopped booting altogether. Only the lights would come on and the fans would spin. I reset the bios and it still didn't work. I removed the GPU and tried it on the VGA slot. Worked. I thought I had a bad GPU but just to be sure, I tried it in a friend's computer. It worked there absolutely fine. That brings me back to square one. Right now, I am posting this without having the GPU inserted, although I'm sure the GPU works. What exactly is wrong here? Another thing. Sometimes, even without the GPU, the computer just won't respond to the power button. (No fans spinning, lights turn on etc.)

More about : computer starting graphics card installed graphics card works computer

a b U Graphics card
September 2, 2014 11:10:23 AM

Power supply or motherboard problem.

What is the exact model of your power supply?
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September 2, 2014 10:47:36 PM

The power supply is a cooler master cmp 500. I have been using the computer for a year and it was working fine with this PSU. And it still seems to boot without the GPU so I'm guessing the PSU is still working right? The motherboard is in warranty. Should I get a replacement?
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September 2, 2014 10:55:41 PM

Correction. It's a Cooler Master Thunder 500W PSU. My bad.
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a b U Graphics card
September 3, 2014 7:26:40 AM

Do you have a buddy with a power supply you can borrow (or a store that sells decent ones that you can buy and return).

That coolermaster is not a great power supply (not a PC killer, but not great either). Your GPU requires 400w of power, after the year of use the capacitors age and since they probably used cheaper ones then they degraded quicker and can no longer output what your card needs. If the PSU is not certified with 80+ efficiency or anything else, then there is not even any garante that the PSU could even put out 500 watts to begin with, it could have easily started out at 420w.
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September 6, 2014 2:23:32 AM

So you're suggesting that my PSU's power output has reduced over a year of usage? I have a neighbor with a 750W Cooler Master PSU. Should I try that one?
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a b U Graphics card
September 6, 2014 1:10:44 PM

Yeah you can try your card in that PC.

When it comes to PC power supplies you can always use a PSU with more power then you need as the PC will only pull the needed amount of power.
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a b U Graphics card
September 6, 2014 1:51:04 PM

Capacitors age over time, its just the nature. The more they store and release charge they gradually diminish the quantity of charge they can hold. It is refereed to as capacitor aging.

Now after a year of aging it should not be so low that it cant power your equipment anymore, but when the psu was lower quality and was already working at 85-90% to power your equipment, then the capacitor aging can effect things in a years time.
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September 18, 2014 11:46:54 AM

Guys! An update. After pondering on whether or not, it was the power supply, I took the computer over to my dealer to get it checked. He tried a Geforce GT 210 in it and it worked fine, thus eliminating any issues from the motherboard. It still does not boot or POST with the GTX 650ti installed and unfortunately, the dealer didn't have a good Power Supply available to check if my PSU is underpowered for the 650ti. Do you people think it is the Power Supply that has failed over the year? I'm starting to think it's output has reduced. I checked the Efficiency rating and it says 70% thus making me even more sure it's the power supply.
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a b U Graphics card
September 18, 2014 12:00:11 PM

The GT 210 is so low end it is not sucking up the same power as the 650ti so all that really tested is the mobo socket.

I would assume it is the PSU. 70% efficency means that at 50% load it only wastes 30% power. Lets say it is a 400 watt PSU, this means 50% load is 200 watts, thus 200 watts is the 70 percent, so to output 200 watts it takes (200/70%) = 285 watts.
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