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Ga-b75m-d3p problem with power color 7870

Last response: in Motherboards
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June 13, 2013 9:06:11 PM

Hello, I just bought a power color 7870 graphics card and my pc will not boot. Previous graphics card(640 gt) works but not my 7870.

My rig
I
i5 3570k
Corsair tx 750
Ga-b75m-u3p
7870 power color

The card seems to work on my friend's computer but won't let mine even get to post. Please help
a b U Graphics card
a c 134 V Motherboard
June 13, 2013 9:39:44 PM

Did you connect the two 6-pin pci-e power cable to your 7850?
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June 14, 2013 4:00:23 AM

Madn3ss795 said:
Did you connect the two 6-pin pci-e power cable to your 7850?


Yes I have
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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 4:54:51 AM

Have you tried to start up the PC using the i5's IGP and uninstall all nvidia-related stuff from Windows?
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June 14, 2013 5:29:56 AM

Madn3ss795 said:
Have you tried to start up the PC using the i5's IGP and uninstall all nvidia-related stuff from Windows?


I have loaded into the i5's integrated graphics and uninstalled the nvidia drivers.
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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 5:31:22 AM

And did that fix anything? If the problem's still there then maybe a BIOS reset could help.
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June 14, 2013 5:39:04 AM

Madn3ss795 said:
And did that fix anything? If the problem's still there then maybe a BIOS reset could help.


No that didn't do anything. Does this graphics card require cms to be enabled? Because I can not seem to find it in my bios settings.
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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 5:43:29 AM

CMS means? Basically if your previous card worked normally, psu can handle it then there shouldn't be any problems. Sounds weird but how about borrowing his PSU to see if your 7870 can be powered up using that?

And one thing I forgot to ask : did the vga's fans spin when you turn on your pc?
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June 14, 2013 5:59:30 AM

Yes the fans spin on the graphics card. I tryed my friends psu and the same result occurred, however the graphics card works on his computer. I am super confused but I think it's a motherboard/bios issue. I was planning on buying the biostar tz77xe3 because I've heard good things about it. So I guess I'll just purchase it sooner than I was planning.
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Best solution

a b U Graphics card
a c 134 V Motherboard
June 14, 2013 6:03:28 AM

Yes it does seem to be your motherboard only now. Yet for new mobo I prefer Asrock/Gigabyte ones over the Biostar boards ( they all got bad reps ). Asrock z77 e3 is being offered with a 8gb stick right now, seems nice : http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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June 14, 2013 6:07:08 AM

I have pretty much all the ram I need, would the extreme4 be worth the extra 10 dollars?
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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 6:10:16 AM

Since you can't OC your i5 3470 by a good amount, nope. E4 offers mostly better OC features for unlocked cpus ( 2500k, 2700k, 3570k, 3770k,.. ).
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June 14, 2013 6:23:55 AM

I have the 3570k and was planning on overclocking.
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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 6:33:20 AM

Right, something's wrong with my eyes atm... If you do want to OC by a great amount like 4.8ghz+ and have the desire to grab a good 50$ cooler for that then the Z77 E4 would be the better choice. If around 4.5ghz is good ( good enough to gain much higher FPS in games, if you ask me ) then just grab the E3 and a decent cooler like Hyper 212 EVO.
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June 14, 2013 6:44:24 AM

I was thinking around 4.5 or 4.7 for my CPU so I bought the zalman cpns10x performa cooler. I really don't know what differences there are between the e3 and e4 but which would you recommend for overclocking between 4.5 and 4.7?

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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 7:55:51 AM

Take the E4 for that range of OC-ing.
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June 14, 2013 9:30:55 AM

Thanks so much, you've been extremely helpful
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a b U Graphics card
a c 134 V Motherboard
June 14, 2013 10:00:21 PM

Remember to pick your best answer on the way out ;) 
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!