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New build, system crashes but power still on

Last response: in Graphics & Displays
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January 17, 2014 7:45:13 AM

I built my computer a few weeks ago and there's a small problem. With no warning, the whole system crashes when playing games. The screen will go black and I can't do anything, but the power is still on. Only a hard reset will start it back up.

I thought it might be the CPU overheating, so I ran a temperature monitor and it never really got above 40 degrees.

Then I talked to a friend and he thought it might be a problem with the GPU overheating. I figured he was right, because I never hear the GPU fan (or any case fans for that matter) really kick in. I have a HIS Radeon HD 7870 2gb. I install a software called iTurbo that came with the card and made it so that the fan is loud but cool. It didn't work and I'm out of ideas.

System Specs:
OS - Windows 7 Ultimate

GPU - HIS H787F2G2M Radeon HD 7870 GHz Edition 2GB 256-Bit GDDR5 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU - AMD FX-6300 Vishera 3.5GHz (4.1GHz Turbo) Socket AM3+ 95W Six-Core http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU - CORSAIR CX series CX500 500W ATX12V v2.3 80 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Motherboard - BIOSTAR TA970 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS http://www.newegg.com/Product/Product.aspx?Item=N82E168...

RAM - Crucial 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Case - CFI Diablo LT CFI-B1010 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If there's anything else that would be helpful for me to list ask me. I don't know what to do and I'm going crazy. I appreciate any help you can offer. Also, would this be the right category for this post?
a b $ Windows 7
January 17, 2014 7:48:54 AM

Would probably be more suited for the Systems category, but you're ok lol

Does your friend have a power supply you could borrow to see if you got a bad PSU? That's kinda what it sounds like to me...
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January 17, 2014 7:52:15 AM

I doubt it would be big enough; his computer is less beefy than mine. The PSU is exactly at the minimum of what my GPU says it needs. Do I need to get a bigger one?
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a b $ Windows 7
January 17, 2014 7:58:34 AM

theytriedanddied said:
I doubt it would be big enough; his computer is less beefy than mine. The PSU is exactly at the minimum of what my GPU says it needs. Do I need to get a bigger one?


Wattage isn't what I'm worried about. It's definitely good enough, but if you get a bad part, it doesn't matter if you have a 1500w 80+ platinum lol

Do you have the latest drivers installed for the 7870?
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January 17, 2014 8:48:11 AM

HiTechObsessed said:
theytriedanddied said:
I doubt it would be big enough; his computer is less beefy than mine. The PSU is exactly at the minimum of what my GPU says it needs. Do I need to get a bigger one?


Wattage isn't what I'm worried about. It's definitely good enough, but if you get a bad part, it doesn't matter if you have a 1500w 80+ platinum lol

Do you have the latest drivers installed for the 7870?

I used the device manager to update it and is said it was the most current version. Is there another way I should do it or is that good?
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a b $ Windows 7
January 17, 2014 8:51:02 AM

theytriedanddied said:
HiTechObsessed said:
theytriedanddied said:
I doubt it would be big enough; his computer is less beefy than mine. The PSU is exactly at the minimum of what my GPU says it needs. Do I need to get a bigger one?


Wattage isn't what I'm worried about. It's definitely good enough, but if you get a bad part, it doesn't matter if you have a 1500w 80+ platinum lol

Do you have the latest drivers installed for the 7870?

I used the device manager to update it and is said it was the most current version. Is there another way I should do it or is that good?


Uninstall that driver, then go directly to AMD's driver download webpage and get it from there. Never trust Windows Device Manager for GPU drivers lol
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January 17, 2014 8:52:47 AM

HiTechObsessed said:
theytriedanddied said:
HiTechObsessed said:
theytriedanddied said:
I doubt it would be big enough; his computer is less beefy than mine. The PSU is exactly at the minimum of what my GPU says it needs. Do I need to get a bigger one?


Wattage isn't what I'm worried about. It's definitely good enough, but if you get a bad part, it doesn't matter if you have a 1500w 80+ platinum lol

Do you have the latest drivers installed for the 7870?

I used the device manager to update it and is said it was the most current version. Is there another way I should do it or is that good?


Uninstall that driver, then go directly to AMD's driver download webpage and get it from there. Never trust Windows Device Manager for GPU drivers lol


I'm not home at the moment, but as soon as I get home I'll do that. Should I look into getting a new PSU if that doesn't work?
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a b $ Windows 7
January 17, 2014 8:58:35 AM

Well if that doesn't work then it's still between the PSU and GPU. Would you be able to grab another GPU or PSU to test from another system?
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a b $ Windows 7
January 17, 2014 8:58:52 AM

Try another PSU, CX 500 is not a good unit.
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January 17, 2014 9:02:07 AM

HiTechObsessed said:
Well if that doesn't work then it's still between the PSU and GPU. Would you be able to grab another GPU or PSU to test from another system?


I'll try. I'll see if I can borrow my friend's sometime this evening.
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a b $ Windows 7
January 17, 2014 9:03:37 AM

Ok, I strongly think the PSU is the problem.
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January 30, 2014 1:08:59 PM

I don't know if you can still see this, but if you do I have some new information. Also, I'm sorry I never responded. Ok, so I got a new PSU and that's not the problem. I also got a new motherboard, so that's not the problem. The blackout happens very quickly if I leave the fans on auto, but if I set them to 100% it can last for about an hour, so I ordered a new CPU cooler. That will come in a day or two. BUT, I just noticed something; When it happens, I can still hear the audio! Its garbled and there's static, but I can hear the words being spoken and the game's music. Could that mean something?
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