Video card not enabling unless power cables reset

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Dunkinator

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Aug 7, 2014
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4,510
Hi there,

I have a Geforce GTX570 connected to a Coolmaster 750W power supply. The machine has run flawlessly since I built it. However a few days ago, the display failed to re-initialize after trying to wake the machine from sleep. Upon shutting down the computer and restarting, I still had no display.

After an exhaustive series of tests, I found that if I removed the two power cables connected to the GPU and then re-connected them, the display worked when I next booted the machine. Now switching the machine off and on again is a bit hit and miss - sometimes the display starts, sometimes it doesn't. Each time reconnecting the GPU power solves the problem. Once running I've experienced no problems and ran 3D Mark multiple times to try see if there were any issues - there were none.

Anyone experienced something similar? Could it be video card failing? Power unit failing? I've resetted the BIOS as I thought it might have been some strange standby issue.

Any help would me most appreciated!
 
Solution
ronintexas
7 years is a long time for any computer parts....some last 10+ years, others a lot less. On my primary desktop, I like to keep parts 3 years or less, secondary systems 5 years or less. My non-essential machines are 7-10 years, with a bunch of mixed parts....LOL.

The Corsair RM series is a good replacement. For my performance systems, I usually go with the HX or RM series from Corsair.
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Dunkinator

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Aug 7, 2014
3
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4,510
Hey there - yes it sounds a little power related. But I've had the power supply and video card for ages so just seems a bit odd it would suddenly stop working? Just strange though that it works fine if the power cables are reconnected - just perplexed what difference that would make. Surely the power either works or doesn't?
 
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ronintexas

ronintexas

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Dec 10, 2012
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A leaky capacitor can create that problem. As power supplies age, their ability to perform degrades. Remember - 99% of the internals of your computer are Digital (on or off), but the PSU, fans, hard drive motors and optical drive motors are analog devices - and may not be up to par....

The first thing I would check on this would be to replace the PSU....I would be willing to bet the problem goes away....
 
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Dunkinator

Reputable
Aug 7, 2014
3
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4,510
Thanks for this - the power supply in question is 7 years old - how long do they usually last reliably for? Also would the Corsair RM series be a good replacement?
 
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ronintexas

ronintexas

Judicious
Dec 10, 2012
5,911
0
32,960
7 years is a long time for any computer parts....some last 10+ years, others a lot less. On my primary desktop, I like to keep parts 3 years or less, secondary systems 5 years or less. My non-essential machines are 7-10 years, with a bunch of mixed parts....LOL.

The Corsair RM series is a good replacement. For my performance systems, I usually go with the HX or RM series from Corsair.
 
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