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Weird display behaviour

Trish's Escape from Hardware Hell Help Board » Hardware » Video Related Problems » Weird display behaviour « Previous Next »

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Werwerf
Posted on Thursday, July 10, 2003 - 1:45 am:   

Hi!

I have just assembled a new PC:

Motherboard: ASUS P4S8X-X
VGA: XELO Radeon 9000 Pro
RAM: 512MB DDR 333
PCI Cards: Firewire PCI card
OS: WinXP SP1
Display: Sony SDM-X72 (TFT Display)

I used the two HD I had from my previous PC (that never gave me troubles) and the DVD and CDRW drives. The TFT display was plugged to the DVI connector of the VGA card. Everything went fine with the instalation (drivers et al.), and after installing the ASUS drivers, everything was Ok.
Just the day after the setup I started experiencing weird "multicolored dots" on the display, like wrong pixels. If I change the display resolution back and forth, the "bad pixels" get cleaned, but the problem reappears after a while.

Since then I have tried everything: updating the AGP drivers, the VGA drivers, tweaking the BIOS (setting the AGP aperture, mode, primary VGA, etc.) but nothing seems to solve the problem. I tried to connect the display to the HD-15 connector to see if it was the DVI connector's problem, but the problem reappeared.
The last thing I have noticed is that whenever I play music (like MP3 or a movie), the problem arises, but it also arises without that "trigger".

Could it be a defective VGA card? Has someone experienced a similar problem?

Thanks in advance!
E.S.
Posted on Thursday, July 10, 2003 - 3:34 pm:   

Hard to say what the problem might be, as far as the hardware goes, you do have a few options. Start with checking the Asus sight for Bios upgrades or changes that might directly be related to AGP and video card support. I have seen on more than one occasion that a hot CPU or video card can trigger video display corruption so check your temps and fan speeds when the problem occurs.
Werwerf
Posted on Thursday, July 10, 2003 - 11:25 pm:   

Hi!

Thanks for the advice. I have checked those parameters and the seemed fine (about 35ºC for both CPU and MoBo). By the way, my CPU is a P4 2,56GHz.

I will try to test my old VGA (Radeon 7200 64Mb) to see if the problem reproduces.

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