IMac :: 20 Alu - Black Screen - Graphics Card (HD2600) Failure?
Mar 19, 2010
I installed USB Overdrive (a program), I clicked on restart and my iMac never got up. When I start it, the HDD and fans do work. But there is no boot sound, and when I change sound levels, I cannot hear it. I think, it never makes it to OSX. It does not load the OS. I dont think it is Graphics card (HD2600) failure.
When I try to reset PRAM, nothing happens. Usually I must hear it restart again with loud boot sound but it never happens. Also my keyboard does not seem to work, as the CAPSLOCK button does not light up, when pressed. I changed RAM to different moduls, still the same. I checked the iMac RAM on a different computer, it works. Maybe USB Overdrive killed the USB slots? As my USB keyboard does not seem to work
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Mar 21, 2012
Do not want a nuisance to escalate into a serious problem thru benign neglect. Random black screen -- Turn monitor off then on, and all comes back fine. No loss of power in machine, no fan quirks, no overheating. Is it the Monitor? or the graphics card?
Info:
PowerMac, Mac OS X (10.5.8), 6GB DDR2 SDRAM
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Apr 15, 2010
I've got a 2007 Macbook Pro. It's on its second graphics card (8600M GT), the first one failed on me a year ago. OS X 10.5.7, all firmware updates installed.
I think I have a new graphics card issue, but I can't prove it. In Front Row, after 10-20 minutes, often parts of the screen will start going black. Then it freezes. Sound works fine. It doesn't look like the same kind of wild distortion that I got when my GPU failed the first time, though, it just looks like things have been rendered incorrectly.
When Front Row finally quits, I've had black and white bars across my menu bar a couple of times. Once the computer then totally locked up and I had to reboot.
In Windows XP in boot camp, things are worse. I only use boot camp for games, since they use a lot of graphical power, it made sense that the problems happen there more often. After 15-20 minutes, the screen will start stuttering, then the keyboard/mouse will stop responding. The sound will hiccup a few times too. That lasts about 10 seconds, then everything returns to normal for a while (as little as 10 seconds, or as long as 5 minutes.)
The Apple Hardware Test (short and extended) shows no trouble. Techtool Pro shows no trouble. I ran the very thorough memtest86+, and it showed no memory trouble.
Can anybody give me any tips on definitively diagnosing this problem? Is there any kind of really intensive hardware test I can get (a live CD maybe)?
Second question, has anybody heard of Apple replacing a laptop that has had many faults with a brand new unit?
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Mar 20, 2010
Stupidly installed this: [URL] wanting better performance from my Nvidia 8600M GT 512Mb. Was asked to restart after install & wouldn't boot (only getting the grey then blue screen in 10.6.2) Am now unable to boot up in anything other than Safemode. While installing update is gives the option to revert, tried this in safe mode but it ends in a fail. If it can revert then somewhere is a backup of the original driver yeah? Where is it & can restore it manually/rename it as the original? Tried to use TimeMachine but won't boot for me in Safemode.
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Mar 9, 2008
Yesterday my screen (30" Apple Cinema) started showing symptoms of graphics card failure, jagged lines across the screen. I rebooted my Mac Pro and it was gone. Then it happened again an hour later, this time the machine didn't boot, I get the Apple logo, and then it hangs up and the screen is shifted to left (I get apple logo on left side of the monitor instead of the middle) and jagged lines all over.
So the first thing I tested was using Target Disk Mode, it works. I can access my Mac Pro's internal HD's by TDM from my MacBook Pro. Then I tested single user mode, it does boot, I can't read what's written since the screen is shifted to left, but if I type (without seeing) reboot and hit enter, it reboots. So I assume the single user mode is working.
What else can I try to 100% make sure it's my graphics card that failed and everything else is ok with Mac Pro? I already ordered a graphics card replacement but I wouldn't like to be surprised if the Mac Pro still doesn't boot when the card arrives. It won't boot from Apple Startup DVD either. Same thing happens, gray logo then kernel panic with jagged lines all across the shifted screen.
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Oct 2, 2009
Yesterday my screen (30" Apple Cinema) started showing symptoms of graphics card failure, jagged lines across the screen. I rebooted my Mac Pro and it was gone. Then it happened again an hour later, this time the machine didn't boot, I get the Apple logo, and then it hangs up and the screen is shifted to left (I get apple logo on left side of the monitor instead of the middle) and jagged lines all over.
So the first thing I tested was using Target Disk Mode, it works. I can access my Mac Pro's internal HD's by TDM from my MacBook Pro. Then I tested single user mode, it does boot, I can't read what's written since the screen is shifted to left, but if I type (without seeing) reboot and hit enter, it reboots. So I assume the single user mode is working.
What else can I try to 100% make sure it's my graphics card that failed and everything else is ok with Mac Pro? I already ordered a graphics card replacement but I wouldn't like to be surprised if the Mac Pro still doesn't boot when the card arrives.
P.S. It won't boot from Apple Startup DVD either. Same thing happens, gray logo then kernel panic with jagged lines all across the shifted screen.
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May 29, 2012
a friend recently gave me a g5 power mac that had some issues, and the failure was described as intermittant. The machine supposedly would work properly when booted and start freezing up after time, but if turned on the next day it would work properly for some time. I assumed it was an overheating issue, but apperently there is more to the picture. I have tried booting the machine quite a few times and the display always reads no signal. The machine sounds as if it were booting normally, but there is not output. At first I assumed it was my display cable, which was a DVI-D single link, however the DVI-D dual link cable leads to the same result. Is it nessicary to have a DVI-I cable? None of the error LEDs light up on the motherboard. After doing some hunting I haven't found anyone with the same issue, but I am wondering if I should assume the graphics card is dead. What steps do I need to take to isolate a graphics card failure in a power mac g5?
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Dec 11, 2007
After the 10.5.1 software I'm having a problem with distorted (stripes etc.) icons and menu dropdowns. Apparently not on my desktop or programs like Safari, Mail etc., only on icons and menu dropdowns, which I find odd. Sometimes it's gone, but after some time it reappears again. Anyway, sometimes my Mac (iMac G5, PowerMac12,1, 1.9 GHz) is going bonkers completely, which results in a first pink, then black screen. A hard shut down is then the only option. However, I guess it's videocard related (ATI Radeon X600 Pro). I did all the tests, fixes you can think of, but without any results. I contacted Apple support, but because this is an iMac, you can't just replace the card, they told me that the whole motherboard should be replaced, which will cost me approx. 700 EURO. Of course I am not willing to do that, which means that I'll have to buy a new Mac. Of course a new Mac is always a delight, but I find replacement after just 2 years unacceptable.
Information:
iMac G5 PowerMac12,1
Mac OS X (10.5.1)
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Oct 14, 2010
I have a friends macbook. It's circa 2004 according to her. The display look horrible. It looks equivalent to like 8bit windows YUCK. I'm not sure the problem, but it's hard to diagnose (I'm a noob anyway), when I can't see anything!!
Heres a pic
could someone point me in the right direction. I tried searching but it's hard to find anything because I don't know how one might describe this problem correctly.
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Jun 5, 2009
will a ATI Radeon HD 2600 PRO with 256MB in an imac or a 9600 gt m 512 in the umbp be better?
strictly the graphics cards, on gaming performance.
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May 9, 2010
I just got a new MBP i7, and whenever the graphics switch from the Nvidia 330m chip to the Intel chip, the screen "flickers" black for a short moment before reappearing. Can anyone with a new MBP comment on this behavior? It doesn't happen on the switch from Intel->Nvidia, just the other way around.
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Jun 18, 2012
I just got my macbook pro retina 2.6 with 16 gigs of ram. It was working great for the first 40 minutes then on the left side of the screen two inches went black, then the screen went fuzzy then cleared up. I reinstalled the OS just to be on the safe side and sure enough it happened again. Called support and they told me DOA, however they can't do anything because apple support systems are down! Check out the photos of my screen. It will clear up if I don't use it for a few minutes which makes me think it is the graphics card. Hope this isn't a displaygate for apple all this money and I get a DOA - whatever happened to QA?
Info:
MacBook Pro (Retina, Mid 2012)
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Oct 7, 2009
with this talk of new imacs and mac mini's I thought it would be fun to speculate on what gfx card they may choose to include in the high end model. After a little searching around on what mobile cards are around my bet is on the Geforce GTS 160m. They seem to be going almost exclusively with Nvidia with the exception of the 4850.
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Sep 16, 2009
I recently read somewhere that I can actually change the graphics card on my mac. If so where can I buy the ATI Radeon 4850 graphics card? and how much will that set me back?And could I get this upgrade done by my local nextbyte retail store?If it is possible to have nextbyte upgrade my card would they send it off to apple?
I really just need this card so I can play aoe3 on all settings high and be able to handle games like cod4, quake and all those graphic hungry games.
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Jun 22, 2010
My two previous older macs have been perfect to me, but this new MBP I5 model is giving so many issues lately. Every once in a while, my computer's graphics (I am assuming) goes crazy, and I get this pixelated distortion that's right in the middle of my screen that's about 2"x5" on my 17" screen. This happened just earlier, while I was using Safari. However, even after closing all of the Safari windows down, the distortion will still be there, and will stay there regardless of what I have or don't have open. Logging in and out will fixes the problem, and everything goes back to normal for the mean time. Any one ever experience similar problems or know what I could do to see what's going or fix it?
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Jan 15, 2009
is it possible to add another monitor to a Imac with the 256MB graphics card on it?
The system will have 4gb Ram.Is this graphic card strong enough or is it better to get the 512MB one?can I easily run lets say... dvd encore, premiero pro type of software?
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Jun 12, 2009
My 3 yr old IMac G5 (no isight) seems to be real sluggish in graphics dept. I never used to have problems watching hulu videos, now they stutter. When I play warcraft, the game struggles to keep up if I'm in an area where there is lots of players. Would a new graphics card help? Is it replaceable on my IMac model?
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Jun 15, 2009
I want to use a windows Driving Simulator on my iMac, probably using Bootcamp. The system requirements are
Graphics - Any 64MB 3D graphics card or above*
*NVidia GeForce FX or higher / ATI Radeon 9500 or higher. Laptop versions of these chipsets may work but are not supported. Other integrated graphics chipsets are not supported.
I have an 20 month old iMac with a ATI Radeon HD 2400 XT. Will that do? I have absolutely no idea about this stuff!
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Jun 20, 2009
What is the better graphics card, the NVIDIA Geforce GT 120 in the iMac or the NVIDIA GeForce 9400M + 9600M GT with 512MB found in the Macbook Pro?
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Sep 16, 2009
It only took me a year to figure it out, but I've confirmed that the problems I've been having for the past year with the screen freezing (thought the computer was freezing) are owed to a bad graphics card. The card I have in my 2.16GHz 24" iMac (purchased Sep '06), NVIDIA GeForce 7300 GT, is indeed ready to die. I found some articles that said the graphics card is easily upgradable in my iMac. If true, which replacement card should I buy? And is this something I can install myself, simply by removing the cover, pulling out the old card and installing the new?
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Aug 23, 2010
Every once and a while, usually when my MacBook is running on it's battery, the screen will show a black screen for nearly only a millisecond or two. It's not too bothersome, and it usually blinks back to normal before I can notice it, but nevertheless I don't want it, and from what I can recall, this only started happening after I installed the Snow Leopard Graphics Update. Is anybody else getting these problems on their MBPs or MBs? MacBook config details in my sig.
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Oct 27, 2010
im about to buy a Imac 2.66ghz C2D and i just have a few questions, The paticular imac im buying has a Ati radeon 2600 HD, and ive been hearing on the internet that it doesnt support features within snow leopard, what kind of features will i be missing out on? Will it hinder the speeds of the computer or will i have any paticular issues when installing snow leopard because of having this graphics card..
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Mar 3, 2009
If I bought the cheapest iMac at base model right now, in a month or two could I buy more RAM for it? Then could I later buy a better video/graphics card and get that put in And could I have these things done by official Apple peoples. Not that I care much - I'd just like to know if official people do this.
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Mar 4, 2009
noting the diff which is speed, type of ram, graphics card and harddisk. My more impt factor is the graphics card. Is the new Nvidia 9400m better than the old ATI card?Not sure which to get... how to balance with the new machine with the price....My assesment is that... the diff is about $100 or even equal if i upgrade the old model to 4gb ram. So, is the ~$100 diff justifiable to get the old one cos its $100 cheaper but get a better graphics card? Or pay $100 more to get the new model with a bit slower CPU, lousier graphics card but double the hard disk and DDR3 ram compared to DDR2.
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Oct 31, 2009
Im going to throw out a scenario and see if anyone sees flaw in my logic.I first will mention that I will stick with console gaming and wont play games on the imac, although I thought in 07 there was a youtube video of someone playing crysis on a 2600GT imac (im not sure what the real graphics card was or if thats even a real one). I will be editing photos using aperture or some other photo editor, running Vuze nonstop, 12 tab browsing, and also probably watching a movie. My G5 ALS imac did that with about 3 tab browsing pretty easy. Also it wasnt editing photos. ANYWAYS. Amazon has the i5 for 1972.98 and applecare for 135.99 for a total of 2108.97
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Dec 5, 2009
I have a 21.5 inch base model imac. It appears to have moderate yellowing on the bottom 1/3 of the screen so thinking about returning it today when I go to the Apple Store for my broken iphone. I was thinking about jumping to the 21.5 with the 1TB drive and dedicated graphics card if I do exchange. Is it worth the jump?
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Dec 29, 2009
What would show more immediate quality of graphics and faster on-line refresher rates, a graphics card with more ram or double the memory? Im debating whether to get the 512mb ATI Card or an additional 4 gig or Memory with my new iMac.does Apple not offer the really high end ATI Cards with 1 gig of ram?
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May 12, 2010
I have an 06/07 model 24" iMac - I believe it was the only one of that make that had an internal PCI express slot...currently with an nvidia 7600GT in it.
If I were to get dirty with some screwdrivers, would it be possible to upgrade my graphics card to something compatible with MacSteam? (Nvidia 8 series+)
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Jun 11, 2010
Recently my 20" iMac has been showing some strange graphic problems when starting up, it doesn't happen all the time. Its hard to explain, what it looks like so I was able to capture a video of it on my iPhone, it happens near the end of the boot cycle; Here's a link to the video; [URL:...] I've tried clearing the PRAM etc and no luck. The iMac will be two years old this August, I don't have AppleCare. Do you think the video card is dying?
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Mar 23, 2010
Okay so i own an imac. the specs of it are a 3.06 ghz intel core 2 duo processor, 500gb, 2gb of ram and an nvidia geforce 8800 gs graphics card with 512mb of video ram. Okay so like most people have asked this before, what is it? The GS only has 384mb of video ram, and this has 512mb of video ram. What is this graphics cards real name and what are the specs of it?
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