Hd 7870 Black screen Everytime i start a game.

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OhJeeZ1

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Sep 20, 2013
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basically i was playing FFXIV, The screen froze and a sound loop happened, Did a hardboot by pressing the power button. The screen wouldnt turn back on, I left it for about 5 mins and it suddenly started working again, But the problem is now i cant play any game what so ever as soon as i launch the game it crashes and goes back to Loading the PC back up, I've tried my older card a hd 5670 and it worked fine.. The HD 7870 is only 1 month old and it hasnt been overclocked... please help me i dont know what to do...

thanks :)
 
Solution
DiaSin
I see what happened. You tried to save money on the PSU. That is a VERY VERY cheaply made low end model. It is not even 80+ rated, which means it may be putting out as low as half of its rated wattage, and it looks like its only got 22 amps on the 12v rail, which is nowhere near enough for that GPU. The one think you never skimp on in a PC build is the PSU. If it were to totally fail it could take the entire system with it, especially since it probably does not have as many safeguards as a higher quality unit. You need at least an 80+ Bronze rated PSU of a major brand, about 600-650w will do just fine on a system with a single 7870. Something like this.. http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096

You may be able...
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OhJeeZ1

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Sep 20, 2013
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Cit 750W The PSU is only 1 month old aswell.


Ofcourse, otherwise the GPU Fans wouldnt start and they are.

 
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DiaSin

DiaSin

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Feb 7, 2013
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cit? I am not familiar with that brand. Do you have a link to the PSU somewhere that would have specs? I suspect that it may be a very low end psu that is not putting out enough amperage. As for the GPU fans, there is a small amount of power put out by the PCIe slot, which is why some entry level cards do not use external power connectors.
 
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OhJeeZ1

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http://www.amazon.co.uk/gp/product/B002Q8HFEI/ref=oh_details_o07_s00_i00?ie=UTF8&psc=1

Also you're wrong about the fans cause if i unplug the power cables the fans dont even run at all... Also the PSU + the GPU have been runnin fine for the past 1-2months... So i dont see why it would be the PSU
 
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DiaSin

DiaSin

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Feb 7, 2013
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I see what happened. You tried to save money on the PSU. That is a VERY VERY cheaply made low end model. It is not even 80+ rated, which means it may be putting out as low as half of its rated wattage, and it looks like its only got 22 amps on the 12v rail, which is nowhere near enough for that GPU. The one think you never skimp on in a PC build is the PSU. If it were to totally fail it could take the entire system with it, especially since it probably does not have as many safeguards as a higher quality unit. You need at least an 80+ Bronze rated PSU of a major brand, about 600-650w will do just fine on a system with a single 7870. Something like this.. http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096

You may be able to get away with a high quality 500-550w depending on your CPU and other components, but I would go with that 620w as a minimum to keep some headroom.

Edit: Here is a link to the same PSU on the UK amazon: http://www.amazon.co.uk/Seasonic-S12II-620-ATX12V-Standard-Supply/dp/B003BIEOCI/ref=sr_1_1?ie=UTF8&qid=1379683391&sr=8-1&keywords=SeaSonic+S12II+620
 
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Solution
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OhJeeZ1

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I understand that, but why would it suddenly stop working correctly? after being used for 1-2months...
 
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DiaSin

DiaSin

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Like I said, it is a very low end cheaply made unit.
 
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OhJeeZ1

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Sep 20, 2013
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What about
http://www.amazon.co.uk/Corsair-Builder-Series-Modular-Certified/dp/B00ALYOTTI/ref=sr_1_8?ie=UTF8&qid=1379684370&sr=8-8&keywords=SeaSonic


 
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DiaSin

DiaSin

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That would get you by, I would personally prefer spending the extra money on the seasonic as I dont know much about the lower-end corsair models, but corsair has a history of reliability so it should be fine.
 
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OhJeeZ1

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Sep 20, 2013
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Thank you very much got the 750W corsair and it works fine now :)
 
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