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blinking screen / ghost images / locking up


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#1
DClifton

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Hello out there... tried to research this here to prevent redundancy - didn't quite see my issue - I have an older Dell Dimension E520 (Windows XP), a few weeks ago I noticed what appeared to be a little rectangle of dots to the right of my cursor, very light but as I used it, kept getting darker. Also noticed very faint dotted lines appearing in the background across the screen. Little annoying, but workable. After a week or so, these issues continued but then the screen would begin flashing to black and back to the original screen....and then the cursor would lock up. Sometimes it would un-freeze, but then if I would try to "X" out, would sometimes get a double image- my desktop plus the screen I was originally viewing. I couldn't even shut down, had to basically pull the plug and then do a re-start. Bring it back up, ok at first, but the longer I use it (matter of minutes) it gets worse and worse...I tried reloading an updated video card driver, didn't help - only have problems when I'm on the internet - I can work text files, photos,etc. no problem......ANY help appreciated.....

Edited by DClifton, 31 October 2012 - 08:01 AM.

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#2
phillpower2

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:welcome: DClifton

Possible causes include a bad PSU (power supply unit) a failing video chip or video card if fitted and overheating.

Can I ask when was the last time that the computer was cleaned out of heat trapping dust, do the cooling fans sound as if they are working as they should (any change in noise levels etc) and are you using the motherboards integrated video chip or an add on video card.
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#3
DClifton

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:welcome: DClifton

Possible causes include a bad PSU (power supply unit) a failing video chip or video card if fitted and overheating.

Can I ask when was the last time that the computer was cleaned out of heat trapping dust, do the cooling fans sound as if they are working as they should (any change in noise levels etc) and are you using the motherboards integrated video chip or an add on video card.


Thanx for the reply - I actually cleaned it out a few months ago... pretty dusty, but now that you mention it, I have noticed a slight change in the fan noise..., yes using all original to the computer. We did lose the CD a few months ago, just been downloading to a flash drive and burning cd's on my laptop - ya know - maybe this thing has just too many issues... might be time to do my part for the economy and buy another one - this one's got some years on it... Thanks again!!!!
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#4
phillpower2

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No harm in trying a good clean out to try and extend the computers life expectancy, see my canned text below;

If the computer needs cleaning out, first remove the power cord from the wall and open up the case, take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case, remove the video card, blow out the slot and re-seat the card securely, do the same with the memory sticks, clean all internal fans, if you use canned compressed air do not let any fan spin freely this can damage them, use something like a clean lollipop stick to hold the fan.
Make sure that all internal connections are secure and that there are no loose components, write down the PSU details (make and model) re-assemble the computer, boot up and see how it goes.
Just a cautionary note, if you do use canned compressed air do not upend the can as it is possible for fluid to be emitted.

If a clean out does not resolve the issue we should check the PSU next.
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