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PC goes into sleep mode while playing games for my AMD 7750

Last response: in Graphics & Displays
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May 21, 2014 8:36:33 AM

Hello guy's. I need urgent help. When i play games like BATTLEFIELD 3,NFS HOT PURSUIT". My screen turns black and pc falling sleep.My screen goes into power saving mode.This never happens when I am browsing the internet,watching movies.I have to restart to get the signal,i cant do anything.I also have tried by changing the windows power setting.

MY specs are:
Operating System: Windows 7 Ultimate 64-bit
Memory: 4 GB DDR3(transcend)
Processor: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz (4 CPUs)
Motherboard:Gigabyte B75-d3h
Graphics card: SAPPHIRE AMD 7750
PSU: Corsair vs450

NEED URGENT HELP
a b À AMD
May 21, 2014 8:38:28 AM

That sounds like something might be overheating. Check your temps while you are playing.
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May 21, 2014 9:59:04 AM

i have checked with furmark at 99% load,when my GPU touched 68-70 C ,my PC shows power saving mode
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May 21, 2014 10:02:07 AM

I have cleaned my case ,my cabinet is COOLERMASTER N200 ADVANCE,forgot to mentiion
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a b À AMD
May 21, 2014 10:56:05 AM

It is the monitor, not the PC, which enters power-saving mode when it no longer detects a signal. If it happens when your GPU temp hits only 68C, something is off, because a GPU ought to be able to take much more than that. There may be another component overheating, like VRMs on the board, that are causing the loss of signal.
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May 22, 2014 2:09:48 AM

what is VRMs ,I dont know i am noob in this,so how i can check whether my VRMs on board are faulty and also thanks for reply,please answer Onus
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May 22, 2014 2:13:53 AM

ALSO what is the solution for it
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a b À AMD
May 22, 2014 4:05:11 AM

VRM = voltage regulator module. They provide the power to your CPU (on the motherboard) or GPU (on the graphics card).
Make sure they have enough airflow over them to stay cool. You can use a program like MSI Afterburner (a free download) to control the fan speed on your graphics card. Try setting it higher and see if that helps.
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May 22, 2014 4:58:41 AM

i use sapphire trixx, increase my fan speed upto 95% ,at 99 % load at 68 C with furmark test ,same thing happens to me
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a b À AMD
May 22, 2014 8:45:52 AM

Hmmm. Have you tested your RAM with memtest?
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May 22, 2014 10:38:50 AM

NOOO,I think should try it and reply you
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May 22, 2014 10:47:08 AM

I have a 7750 in my secondary pc and this sleep mode power saving thing happens to me as well sometimes though not while gaming.Its random.I have reason to believe its an AMD graphics drivers issue rather than anything else.
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May 22, 2014 10:35:46 PM

hey onus i have tried memtest i am getting 2 errors what to do ?????
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May 23, 2014 4:20:13 AM

I want to tell you that when i use sapphire trixx to increase my fan speed then my pc takes some more time to go into sleep, and when i am not using sapphire trix ,it takes only 5 minutes to go into sleep,Please help
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a b À AMD
May 23, 2014 4:43:19 AM

If memtest reports errors, you have bad or unstable RAM, but you might be able to make it stable by slightly increasing its voltage (as long as you keep it under 1.6V) or slowing it down. The standard for DDR3 RAM is 1.5V; some [cheap] RAM may actually need more than that to reach its advertised timings. The Intel IMC is stressed by excessive voltage, so be careful.
If the command rate has been set to 1T, change it to 2T.
Do you have good airflow through your case? A front intake fan and a rear exhaust fan should create sufficient flow to keep a HD7750 cool enough.
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May 23, 2014 6:23:36 AM

yes my CM n200 advance is having 120 mm front and rear fan so i think ,i am having good airflow.
i want to know that with memtest you mentioned is memtest86+ or only memetest.
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May 23, 2014 6:26:22 AM

AND also at full load my GPU temp doesnot go more than 72 C, so i dont think its a case of overheating.
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a b À AMD
May 23, 2014 7:25:56 AM

Well, if using Trixx to increase fan speed delays the crashes, then either the temperature sensor is off, or it isn't measuring what is overheating. If you take the side of your case off and aim a common household fan into your PC, what happens?
I think memtest is actually memtest86+.
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May 23, 2014 9:25:41 PM

but i use several softwares , they shows right temperature as at no load my temp is 40 C and at load 68 C so,i dont think so that my GPU sensor are faulty,there may be other reason. PLEASE HELP
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a b À AMD
May 23, 2014 11:58:58 PM

If you take the side of your case off and aim a fan inside, what happens?
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May 24, 2014 1:34:12 AM

ok i will try
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May 24, 2014 5:41:37 AM

yes onus when take the side of my case off ,there is same result at 67 C , my screen shows same NO SIGNAL POWER SAVING MODE ,it is during furmark test SO please help
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a b À AMD
May 24, 2014 7:00:58 AM

If aiming a fan into it delays the shutdown (your monitor is sleeping; the PC is shutting off), then something is indeed overheating. An idle temp of 60C for your CPU is way too hot, so it may be that.
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May 24, 2014 11:21:08 AM

IDELA TEMP IS 45 C SO I DONT THINK THAT CPU OVERHEATING IS THE ISSUE,ALSO THERE IS NO DELAY WHEN I AM AIMING MY FAN INTO CABINET.SO GIVE ANOTHER SOLUTION.HELP ME PLEASE
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May 24, 2014 11:22:09 AM

MAY BE I NEED CPU AS WELL AS GPU COOLING PASTE ,DONT YOU THINK SO REPLY ME PLEASE
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a b À AMD
May 24, 2014 8:15:49 PM

If the fan made no difference, then I misread your post. Since memtest found errors, that's where I'd focus then. Replace the defective RAM if you can't get what you have stable with looser timings or a tiny voltage bump.
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May 24, 2014 10:29:44 PM

HEY I TRIED DIFFERENT RAMS IN DIFFERENT SLOT ,IT DID NOT MAKE ANY DIFFERENCE ,MAYBE MY GFX CARD IS FAULTY BECAUSE I HAVE JUST UPDATED MY MOTHERBOARD FORM GIGABYTE GA-G41 COMBO TO GIGABYTE GA-B75 D3H COUPLE OF MONTHS AGO AND ALSO CHANGED POWER SUPPLY TO GET RID OF THIS IT DIDNOT MAKE ANY DIFFERENCE SO I THINK MY GFX CARD IS FAULTY
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Best solution

a b À AMD
May 25, 2014 8:19:58 AM

Please do not post in all caps. Thanks.
If every other part in your system has been changed, and additional cooling is not helping your graphics card, then it probably is defective. Contact Sapphire about warranty replacement.
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