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New Built PC, Freezing/Crashing Problems

Last response: in Systems
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October 26, 2012 9:14:05 PM

Hello, I built a new PC on Windows 7 64 bit about a month ago, but its having problems with freezing and crashing. Screen turns black and sound freezes, no blue screen. I have to manually turn off PC and restart.

It usually happens during relatively low-load. Froze once while watching a YouTube video, but mostly while I'm playing games like WoW or DotA 2 2-3 hours in which don't take much to run anyway. CPU temps are usually under 50, GFX is under 70. Everything still factory clocked and it did happen when I was running 1x Video Card as well.

Spoiler
Intel i5-3750K
2x Sapphire Radeon HD 7870
Asus P8Z77-v LX
Corsair Vengeance 2x4gb
Corsair TX 750 watts
Samsung 830 256gb


What could be the problem?

October 26, 2012 10:28:52 PM

Sounds like it could be a power supply issue but I have that same supply and I can't imagine why it wouldn't work with that setup. What is the make / model of your GPU?
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October 27, 2012 3:15:39 AM

Using 2x Sapphire Radeon HD 7870 GHZ OC 2 GB GDDR5. Believe our power supply has 54a on 12v rail. Is that enough for my build?
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October 27, 2012 5:28:13 AM

sirthinh said:
Using 2x Sapphire Radeon HD 7870 GHZ OC 2 GB GDDR5. Believe our power supply has 54a on 12v rail. Is that enough for my build?


It should be. I have that same GPU and I'm looking to add a second as well.
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