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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Consumer Hardware & Components > ATI Radeon HD 4870 - Black screen and Fans go crazy!

ATI Radeon HD 4870 - Black screen and Fans go crazy!
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AppleGirl1990
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Join Date: Jan 2008
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Jun 16, 2009, 04:57 PM
 
I decided to upgrade my graphics card to the ATI Radeon HD 4870 (i also purchased a new Apple Display and hooked it up via the Mini DisplayPort).

I've used the computer for a few days now and everything seemed to be working fine. But 3 nights ago my screen turned black and the fans in the computer went crazy. I was forced to hold down the power button and reboot. It happened again this morning.

Has anyone else had trouble with this graphics card? or a simlar experience?
MAC PRO: Two 3.2GHz Quad-Core Intel Xeon 5400 processors
ATI Radeon HD 4870 with 512MB of GDDR5 memory
1600MHz, 64-bit dual independent frontside bus
16 Gigs (4x4) of 800MHz DDR2 memory
     
Highfire
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Join Date: Jun 2010
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Jun 3, 2010, 11:28 PM
 
I have the exact problem as you. I also have a ATI Radeon 4870, and I built a new gaming rig, but every time I boot up, the screen will go black and the fans go crazy and I will have to restart the computer three or four times before it stays stable until the next boot up.
I didn't know what was wrong with it, as I built it and there could be any number of problems, but since you have the same problem and graphics card, that seems to be the issue.
     
Big Mac
Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
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Jun 3, 2010, 11:57 PM
 
Sounds like a nasty graphics card driver bug.

Newt 2012-The Republican Revolution Returns!
     
cgc
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Join Date: Mar 2003
Location: Virginia
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Jun 4, 2010, 09:01 AM
 
When I saw "fans go crazy" I thought of cheering Need more coffee...
     
   
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