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Problem with display - Squares on screen


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#1 dbizzy

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Posted 12 November 2009 - 06:43 PM

Hi, I was having a problem and was wondering if anybody could help me remedy this. I installed a new geforce 8400 gs video card on my dell dimension 5150 desktop with on-board graphics and after I switched to the new card, squares began to appear in the middle of my screen within minutes after restarting Windows XP. The boxes would flicker when watching a video or moving the mouse, and inside the squares were what appeared to be parts of a window that was open previously. When I scrolled up or down a Firefox browser, more squares would appear vertically.

The problem would go away after I reverted back to the on-board graphics.

Thinking my card was defective, I had it replaced with the same one and now I am having the same issue. Do you think it's the motherboard? I've inckuded some screenshots to show you what I'm dealing with. Any advice would be great, thanks.

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#2 techextreme

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Posted 12 November 2009 - 07:58 PM

I'm wondering if your power supply is not strong enough to hold the added video card.

Have a look at the power supply and see if it's marked 250W. If it is, I would definately recommend a more powerful power supply.

350 Watts should be good for what you have including the video card.

I'm also wondering if your 8400 had a power connector on it. If it did, make absolutely certain it is plugged in tightly.

Hope this helps,
Techextreme

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-- Seneca

#3 dbizzy

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Posted 12 November 2009 - 08:31 PM

Funny you should ask. My old 305w dell ps recently just failed me after 3 years so I replaced it with a 450w. Also, there isn't a power connector to this video card. hmm...

#4 techextreme

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Posted 12 November 2009 - 08:34 PM

Can you give us the name and model number of the new power supply?
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#5 dbizzy

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Posted 12 November 2009 - 09:20 PM

It's a Kingwin ABT-450MM power supply




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