Re: 32-bit colors not accessible
- From: Malke <notreally@xxxxxxxxxxxxxxx>
- Date: Thu, 31 May 2007 05:30:21 -0700
Peter wrote:
Hello,
I would be very grateful if someone could weigh in on this silly problem that I cannot get around.
I am troubleshooting my parents computer which is a HP system running XP pro SP2. The problem is that we discovered that photos were displayed awkwardly with not as many colours as one would expect.
Si I went into the Monitor properties panel to check that the color settings were correct. I saw that although 32-bit colors were currently selected, the color spectrum was 'chunky' as it is with lower numbers of colors and not 'fluid and nice' as I from experience expect 32-bit color spectrum to be.
When I change down to 16-bit colors there is no change, not in images/photos nor in the spectrum display. This leads me to think that while it is possible to specify use of 32-bit colors, only 16-bit colors are actually used for some reason.
I tried different resolutions to see if 32-bit was implemented correctly at lower resolutions but no change.
The graphics card is an integrated ATI Radeon x200 and I have updated to the latest Catalyst drivers.
The monitor is a flat panel Hewlett Packard L1706 and I have updated the driver for this one as well with the appropriate driver from HP's site.
What can be wrong?
Here are some screenshots to illustrate how the color settings have no effect on the color spectrum:
High resolution 32bit color
http://img75.imageshack.us/img75/3897/32bithirestb8.jpg
High resolution 16bit color
http://img237.imageshack.us/img237/7993/16bithiresey0.jpg
Low resolution 32bit color
http://img355.imageshack.us/img355/751/32bitloresja0.jpg
If you updated the video drivers from HP's website (and you should use the drivers from HP since this is onboard video) and have no change, the video hardware is probably failing. If this is a new computer, contact HP tech support for warranty replacement of the motherboard. If this is an older machine, if it is a desktop you can try putting in a standalone video card and see if that helps. The correct hardware to choose depends on the model computer. If this is a laptop, then you'll need to replace the motherboard (contact HP tech support) or decide the machine is too old and will not be cost-efficient to fix.
You didn't say what your computer skills are so only you can decide whether it would make more sense for your parents to take the machine to a local computer professional. This will not be a BigStoreUSA/Geek Squad type of place.
Malke
--
Elephant Boy Computers
www.elephantboycomputers.com
"Don't Panic!"
MS-MVP Windows - Shell/User
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