I am currently having problems with multi-colored pixels popping up on my monitor while it is on. The pixels pretty much stay, and more pop up the longer the computer is on. When I drag windows, the pixels create 'lines' on the screen.
Is this a monitor problem, power supply, or video card?
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I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.
With the pixels acting up and the monitor having the same problem on any computer that its connected to. The screen itself is bad and since there are no replacement screens for that monitor, you would have to buy a new monitor or get it replaced if its under warranty.
You didn't specify the card you are running but here is how I would approach the issue.
#1 refurburished Monitors have at a minimum a 90 day warranty, so be prepared to call Dell Tech Support and troubleshoot if my information doesn't help, if the monitor is defective, then they will have to exchange it.
#2 The optimal Resolution is 1680 x 1050 60 hz, you need to ensure that setting (You didn't specify, so I mentioned it)
#3 Sometimes color issues are caused by cabling issues. Try both DVI and VGA connections, see if there is any difference between them (digital or analog, the picture should look the same) If one looks ok, the other doesn't. then it may be a bad cable.
#4 Does the issue occur on more than one system. If it does, then the monitor is bad. If you have individual pixels stuck on (Red, Green or Blue) and you have more than 6, that in itself is justification for replacement.
#5 If all the above doesn't work, contact Dell Tech support for an EXG
Dead or stuck pixels are not uncommon in LCD displays, and the less you pay, the more likely it is to happen (as a general rule) Most manufacturers will a dead pixel warranty, ranging from 7 days to lifetime.
Read your warranty carefully, and speak to the place where you bought your display.
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