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How do you tell if video card is going bad?

#1 User is offline   Mike_Atamian1 

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Posted 14 December 2006 - 05:20 PM

I have an ATI x800XT card in my G5 (AGP slot). It's worked fantastic in the past, had it since I got my G5 a couple of years ago. Recently, I noticed that iPhoto shows very strange behavior- pictures have small, regular rectangular areas that almost look like text overlaid on them. Occasionally, I see this on the desktop as well, but it is really most noticeable in iPhoto. I rarely see it in Photoshop Elements 4.0.
What I don't know is whether this is due to some system corruption or to a defect in the video card. How can I tell?
Thanks,
Mike
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#2 User is offline   almaink 

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Posted 15 December 2006 - 08:21 AM

You could run the Apple Hardware test. It is on a DVD that came with the G5.
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#3 User is offline   Mike_Atamian1 

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Posted 15 December 2006 - 10:11 AM

I didn't think of that. I tried using TechTool Pro and that test said "unsupported".
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#4 User is offline   quicklook2 

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Posted 15 December 2006 - 02:08 PM

have you ever cleaned the inside of your computer?
dust is an enemy of computers, try blowing it out.
also, try reseating the card, and when it is out blow slot out.
ground yourself and do not touch card except at edges.
if you do not know how to do this than find someone who does.
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#5 User is offline   Mike_Atamian1 

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Posted 15 December 2006 - 03:11 PM

Good call, I will try that. I recently had the carpet replaced and that kicked up a lot of dust. Maybe a cleaning/reseating will do the trick.
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#6 User is offline   quicklook2 

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Posted 15 December 2006 - 03:29 PM

do it outside and use a whole can of air.
remember to be grounded.
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#7 User is offline   jpmhughes 

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Posted 15 December 2006 - 05:10 PM

I suggest ruling out the software side first.
Create a new user and boot into that new user account. If the "anomalies" you mentioned are gone it's a good bet there is a corrupt system preference or cache file.
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#8 User is offline   Mike_Atamian1 

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Posted 20 December 2006 - 03:36 AM

OK, I logged in as another user (created a long time ago and essentially never used) and the weird anomalies in iPhoto seem to go away. Next question, how do I determine what system preferences or caches need to be rebuilt and/or deleted? My problems in my other account are not limited to iPhoto but the whole iLife suite and occasionally the Finder.
Thanks,
Mike
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#9 User is offline   jpmhughes 

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Posted 20 December 2006 - 12:37 PM

Mike,
To check your preferences there is a freeware application called Preferential Treatment.
There are applications that will clear your cache files as well, one shareware application is Tiger Cache Cleaner.
This app also does much more to help with maintaining a healthy Mac.
Another cache cleaner is a freeware application named Cache Out X.
Of course, even after using these applications it's possible that the cache or preference may elude these apps.
If that is the case, you could always try searching in Google for other applications, there are plenty of them out there.
You may end up having to do an archive and install.
But it's always good to try these steps first.
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