A7N8X Graphics corrupt on first few boot up attempts

[The Old Man]

Hi,
I have an Asus A7N8X Deluxe rev 2 motherboard.
When I first turn on my PC I get corrupted graphics and have taken some
screenshots with my camera which you can see here:
http://www.millenniumdesktop.co.uk/fx5900/

I thought it was my Aopen Geforce FX5900 128MB video card and swapped it for
another, but the problem remains. After 2-3 switch offs and on's, my PC will
boot as normal instead of locking up at the Windows Log On Screen. It is
then perfect until next time I boot up from cold.

Its driving me nuts. I have removed all PCI cards and tried booting with no
PCI cards and no DVD-Rom drive attached. I have made sure the AMD XP2500
Barton is not overclocked. I have tried booting with different RAM. The only
thing I can think of is the Mainboard or the Antec Trupower 430w PSU.

However, once the PC has warmed up after a few attempts at booting it is
fine until next time it goes cold.

Hope you can help!

Regards,
Graham
UK.

 

[Sam]

Sometime on, or about Tue, 14 Sep 2004 09:36:36 +0100, The Old Man
wrote:

Hi,
I have an Asus A7N8X Deluxe rev 2 motherboard.
When I first turn on my PC I get corrupted graphics and have taken some
screenshots with my camera which you can see here:
http://www.millenniumdesktop.co.uk/fx5900/

I thought it was my Aopen Geforce FX5900 128MB video card and swapped it for
another, but the problem remains. After 2-3 switch offs and on's, my PC will
boot as normal instead of locking up at the Windows Log On Screen. It is
then perfect until next time I boot up from cold.

Its driving me nuts. I have removed all PCI cards and tried booting with no
PCI cards and no DVD-Rom drive attached. I have made sure the AMD XP2500
Barton is not overclocked. I have tried booting with different RAM. The only
thing I can think of is the Mainboard or the Antec Trupower 430w PSU.

However, once the PC has warmed up after a few attempts at booting it is
fine until next time it goes cold.

Hope you can help!

Regards,
Graham
UK.

You might have a video card that's going bad. Do you have another one
you can temporarily swap in, to see if the problem goes away?

Sam

 

[The Old Man]

Sometime on, or about Tue, 14 Sep 2004 09:36:36 +0100, The Old Man
wrote:


You might have a video card that's going bad. Do you have another one
you can temporarily swap in, to see if the problem goes away?

Sam

Hi,
I thought it might be the videocard too. I swapped it for another one, same
type and model and the problem remains.

Regards,
Graham.

 

[Sam]

Sometime on, or about Tue, 14 Sep 2004 19:06:12 +0100, The Old Man
wrote:

Hi,
I thought it might be the videocard too. I swapped it for another one, same
type and model and the problem remains.

Regards,
Graham.

Bad monitor or power supply? If neither of these are the culprit, it
could be your motherboard itself.

Sam

 

[The Old Man]

Sometime on, or about Tue, 14 Sep 2004 19:06:12 +0100, The Old Man
wrote:


Bad monitor or power supply? If neither of these are the culprit, it
could be your motherboard itself.

Sam

Hi Sam,
I'll try those two options next. Over the last few hours, the fault has
changed. I'm no longer getting bad graphics, but after the BIOS has finished
its POST and Windows starts to load, the monitor goes black. A few reboots
(on/off's not resets) cures the problem and my PC is fine.

Graham.

 

[Hadjidekov]

Hi!
I have got the same defect. It was some fan cables, not ruined at all,
touching the printed circuit of my asus agpv9560. I Removed this cables and
it works fine
Nothing must be in contact with the board!!!

 

[Sam]

Sometime on, or about Wed, 15 Sep 2004 16:36:20 +0200, Hadjidekov
wrote:

Hi!
I have got the same defect. It was some fan cables, not ruined at all,
touching the printed circuit of my asus agpv9560. I Removed this cables and
it works fine
Nothing must be in contact with the board!!!

Which brings up a point... when installing the MB in the case, it
shouldn't be touching the case itself, except with the standoff's
connected to the holes in the board. Any extra standoffs touching
other spots on the board can wreak havoc.

Sam

 

[The Old Man]

Sometime on, or about Wed, 15 Sep 2004 16:36:20 +0200, Hadjidekov
wrote:


Which brings up a point... when installing the MB in the case, it
shouldn't be touching the case itself, except with the standoff's
connected to the holes in the board. Any extra standoffs touching
other spots on the board can wreak havoc.

Sam

Thanks guys. Its still hapenning so I'll take a look for any loose cables
and contact points.
Regards,
Graham

 

[The Old Man]

Thanks guys. Its still hapenning so I'll take a look for any loose cables
and contact points.
Regards,
Graham

Problem found. It was the Antec PSU 430w. I moved it to another PC and the
problem transferred with it! Many thanks to those who replied.

Graham.

 

[Sam]

Sometime on, or about Mon, 20 Sep 2004 16:09:51 +0100, The Old Man
wrote:

Problem found. It was the Antec PSU 430w. I moved it to another PC and the
problem transferred with it! Many thanks to those who replied.

Graham.

Glad you got it fixed. Sort of scary though, since I have that same
identical PSU.


Sam

 

[The Old Man]

Sometime on, or about Mon, 20 Sep 2004 16:09:51 +0100, The Old Man
wrote:


Glad you got it fixed. Sort of scary though, since I have that same
identical PSU.


Sam

Thanks Sam,
I'm sure yours will be fine. I also have a 480w model and its great.

 

[Sam]

Sometime on, or about Wed, 22 Sep 2004 11:44:59 +0100, The Old Man
wrote:

Thanks Sam,
I'm sure yours will be fine. I also have a 480w model and its great.

I hope so... the 3.3v line has been wobbling over 5-6%, while all the
other ones stay pretty steady.

Sam