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Can anyone explain why my pc screen will suddenly become jagged and unreadable? I can sometimes get it to clear up by refreshing or restarting, but what a pain! My computer is only 3 months old.

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Here is a list of things to check.

Cable to monitor.

Machine is full of dust and is over heating.
(open it up and use a vacume to get all dust.)

Video card or power suppy is defective replace or if applicable return pc for warranty.

IT is also possible that if this is a custome machine that the power supply is too small and is being overloded.

Posted on May 17, 2011

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Hello, I have a problem with my PC. I'll be


connor,no input you write it can be a easy thing as the monitor-cabel is not tight enough fasten.check that first .if the problem don't go away you have open the computer and remove the videocard clean the cards slot with caned air short poffs never shacke the can.now reseat the card and hope at that did the trick.let me now if ok

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I have a ViewSonic flat screen monitor. The images on the sign in page are fuzzy and unreadable. I have Windows XP.


I would check the connections between the monitor and computer. Also the refresh rate and/or resolution might be wrong. To correct this, you will need to boot your computer in safe mode. (restart computer, right after the computer's logo appears rapidly press the F8 key until a black and white menu appears. Select SAFE MODE) once the computer boots to safe mode, the sign on screen will appear very large. Sign onto the computer once at the desktop, RIGHT CLICK the background and select PROPERTIES. Once the display properties window appears click on the last tab SETTINGS. Here is where you can adjust the resolution. Take the screen resoltution to a low setting. You can always change this later when you boot your computer normally to get a better view. Next click on the ADVANCED button click on the MONITOR tab, usually flat screens operate at a lower refresh rate then CRT monitors. I usually keep my refresh rate to 60 Hertz. Next click on the GENERAL tab. This will allow you to change the DPI setting. I usually keep mine set to 96 DPI. You may want to experiment with this as monitors vary. Once done, click on the APPLY button then OK. Restart the comptuer and see if this has improved your display. You may need to do this several times trying different settings until you get a clear display. If you've exhausted all these steps, try a different monitor or changing the cable. If that fixes the problem then you know you have a bad monitor or cable. Good luck, let me know how it turns out.

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Computer display jumbled and unreadable


From what you describe, I'd suspect the Graphics processor, or even the motherboard as a source of the problem if the monitor works on a different system normally (Best way to check the monitor is a known good video source)

If it is the system, and the system is 8 years old, I'd recommend replacing the system rather than attempting to fix it. Trying to fix GOOD parts for an obsolete system is difficult at bst and oftern can be expensive. Often you can find a low end NEW system (One that is like 20 times faster than the failing system) for less than $300

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Unplug the computer, remove the battery and leave it out for at least 1 full minute. Now put it back and try again.

Did this help?

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But after refreshing does it become normal....? If it becomes normal, then the grayish is normal.

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Right Click My Computer, Click Properties.
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Sounds like its memory, or the mainboard.

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