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Computer Display Problem


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7 replies to this topic

#1 Marck Joseph

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Posted 15 October 2011 - 10:13 AM

Hi Guys,

My computer is running on Radeon HD 4650 1 gig video card connected via DVI to DVI to my Samsung 23 inch LED monitor.

Lately, the display would show white dots on black backgrounds and sometimes whenever I encounter dropdown the selections would go black with white dots.

The worst so far (attached) was when the whole web page turned black with some distorted images.

I'm not that techie so I need your help guys. What seems to be the problem and and how can I fix it?

Looking forward to your answers and thank you in advance.

Attached Files


Edited by Marck Joseph, 15 October 2011 - 10:14 AM.


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#2 .X.

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Posted 15 October 2011 - 10:35 AM

Try replacing the video card and or monitor.

#3 Marck Joseph

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Posted 15 October 2011 - 10:53 AM

Thank you for the reply .X. I appreciate it. I have tested my video card through dxdiag and it seems fine. The problem seems to appear since I changed from VGA to VGA connection to DVI to DVI. I don't know if there something to be done with the settings or something.

#4 Broni

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Posted 15 October 2011 - 10:57 AM

Could be number of reasons.

The problem seems to appear since I changed from VGA to VGA connection to DVI to DVI

Try to reseat your video card.
Try different DVI cable.....to start with.

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#5 Marck Joseph

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Posted 15 October 2011 - 10:59 AM

Thank you Broni. How will I reset my video card, please teach me.

#6 Broni

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Posted 15 October 2011 - 11:01 AM

Turn the computer off. Open the case and gently wiggle the video card making sure it sits well in its slot.
While changing cables maybe you un-seated it.

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#7 Marck Joseph

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Posted 15 October 2011 - 11:03 AM

Ok Broni thank you for that tip. I'm also thinking of switching to HDMI to DVI connection.

#8 Broni

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Posted 15 October 2011 - 11:08 AM

Trying any other cable will give us more info.

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