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Windows 7: Bright pixel on Windows 7 Desktop

05 Jan 2010   #11

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)

Here is what I get in the zip file

Attached Thumbnails
Bright pixel on Windows 7 Desktop-obee_probs.jpg  
My System SpecsSystem Spec
05 Jan 2010   #12

Windows 7 Home Basic

I think the previous file stored the image on my computer, not on the file..

here are 2 jpeg image. the first one is before i went to desktop background menu, and the other one is after.

Attached Thumbnails
Bright pixel on Windows 7 Desktop-before.jpg   Bright pixel on Windows 7 Desktop-after.jpg  
My System SpecsSystem Spec
06 Jan 2010   #13

Windows 7 64bit SP1

That is clearly a white pixel on top of your desktop background. I suspect it is caused by a running application or driver.
If you click on the SHOW DESKTOP icon will it disappear momentarily? I suspect the answer is yes.
The advice I can give you is go to Task Manager and start shutting down active tasks untill the white pixel disappears, then you will know which program is causing this.
PS: It could be a malware as well.
My System SpecsSystem Spec

06 Jan 2010   #14

Windows 7 Home Basic

I had click the SHOW DESKTOP but the pixel didnt disappear.
Here are my running process when the bright pixel appear... any idea which process maybe causing the problem? I am worried if I close the wrong process and something bad happen to my computer..

Attached Thumbnails
Bright pixel on Windows 7 Desktop-taskmanager.jpg  
My System SpecsSystem Spec
06 Jan 2010   #15


Doubtful it's down to anything except a hardware screen issue, and since one pixel is within acceptable defect limits there's nothing you can do about it unless your supplier was specifically paid to check for defective pixels or there's a warranty from the manufacturer about an exchange of hardware if you get a dead or bright pixel...

Dell have one of the best policies on this type of fault, other manufacturers don't tend to want to do much about pixellation defects which call within the norms...

The above chart shows what degree of dead pixels are acceptable per million, for various classes of hardware...

Sometimes people claim 'massaging' a pixel with the tip of a blunt pencil can restore normal functionality, however I'm not telling you to try the same...
My System SpecsSystem Spec
06 Jan 2010   #16

Windows 7 Home Basic

I closed the Desktop Window Manager process and now the pixel disappear...

anyone know what cause that? what is Desktop Window Manager?
My System SpecsSystem Spec
06 Jan 2010   #17

Windows 7 64bit SP1

DWM is resposible for the aero and eye candy in Win7 and Vista.
My System SpecsSystem Spec
06 Jan 2010   #18

Windows 7 Home Premium 64bit

It could be possible a program/driver is causing it. maybe the Fujitsu Display manager? What is it for?
Boot into Safe Mode, see if its still there.

If so, it could also be a stuck pixel. So there may still be hope.

A stuck pixel will appear in any of the colors that its three subpixels (red, green and blue) can form.
In a dead pixel, all subpixels are permanently off, which will make the pixel appear black.

My System SpecsSystem Spec
07 Jan 2010   #19

Windows 7 64bit SP1

It cannot be a stuck pixel, I had a stuck pixel once and it didn't appear on any snapshot and certainly not on other computers at the same spot!!!
This is certainly a driver/utility causing this and I bet it won't show in safe mode.
As Wishmaster said, try to close the Fujitsu Display Manager and try.
My System SpecsSystem Spec
07 Jan 2010   #20

Windows 7 Home Premium x64

QDos, a hardware issue wouldn't show in a screenshot like his is. I agree with the others in that it's an application that's running.

Try this, use msconfig to run a diagnostic startup (basic devices and services only) and then immediately after the reboot go to the screen where you see the pixel. Does it appear? If so, I suspect maybe an updated video driver is needed. If it doesn't, go back to a normal startup, except use the startup tab to enable 4-5 items at a time with reboots after each "group" to test. When you get the pixel, it's one of those 5.
My System SpecsSystem Spec

 Bright pixel on Windows 7 Desktop

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