VERY ODD - VIDEO Issue ?!?!?!!

Macintosh / G5 1.8 powerpc
June 24, 2011 at 12:48:42
Specs: XP , Celeron
Have an XP Home - Emachines T3522 with a LGA775 Intel motherboard.


The computer itself is booting and running windows.

I can hear the Windows startup sounds in the speakers...and can shut it down via keyboard commands (just going by having the keystrokes memorized)

The monitor light DOES show green....the monitor IS receiving an analog signal, but the display is completely Black.

It is not the "cold dead" black.... you could see a slight glow. in the screen...because, again, it is getting a signal.

This is also the case with multiple monitors.

I have also tried resetting the BIOS back to factory via the mobo jumper and by removing the battery.

No difference.

I have ALSO installed an AGP card (this mobo has a slot)....but it does not even power up the card.

NOTE: This "video signal...but dark glow" condition exists during boot up (in the bios messages) as well as in Windows. In other words...I cannot even see the initial startup in order to access the bios settings.

It's just odd that some type of signal IS being sent out the video...but the image is just completely DARK (a glowing dark).

Any Advice GREATLY appreciated.

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June 24, 2011 at 13:38:42
Sounds like a failing power supply. Do you have a spare to swap out?

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June 24, 2011 at 14:31:43
Did the SAME monitor previously work on that system?

emachines use Bestec power supplies which are junk and prone to failure.

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June 24, 2011 at 14:42:48
Yes...the same monitor did work previously.

And...I forgot to mention the power supply.

I did try another/different power supply. Same results.

> PLEASE HELP OTHERS - Report back what did/didn't work for those referencing this thread.<

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Related Solutions

June 24, 2011 at 14:53:48
Are you sure the replacement PSU was a working unit? What is the Wattage of the replacement?

What type of monitors have you tried? All LCD type? Did you use the same signal cable for all tests?

The graphics chip may be failing, or has failed.

The fact that the AGP card didn't work could be a different issue all together. First of all, is the AGP card compatible? there are 3 versions of AGP, each using different voltages. Are you sure you had the card fully seated and locked into place? Were you using a VGA/DVI adapter?

When you reset the BIOS did you have the computer unplugged?

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June 24, 2011 at 15:01:42
make sure to check the agp card and that you have any additional power slots plug into it. Also, check the capacitors on your motherboard. If any are bulged or leaking they need replaced and could be the source of your problem

Please keep us updated so we know if we helped you or not.

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June 24, 2011 at 15:50:38
BIOS cleared when computer was unplugged and current drained.

Test PSU is fine in other PCs

Used LCD and CRT montiors...same result.

Using newer LCD monitor, when computer first powers up, displays message : "analog signal detected"....light is green (not amber)....then goes "dark" but is glowing....light remains green.

When computer is turned off....the screen goes cold glow...and the light goes amber (indicating no power or signal from pc).

The above occurs with any monitor....including the one that worked previously.

I am not sure about the test AGP card compatibility. (I think it is something like type 1 or type 2..etc). Would need to check that.

HOWEVER....the issue of the current status using the integrated video connection (PC is running and booting.....monitor is being powered with some type of light and a dark glow as well as the report of an analog signal by the LCD monitor)......

Has anyone seen this condition before?

I am going to try to get a basic pci video card to test as well...

But...what if the BIOS is still set to default to the integrated (unless otherwise specified in the settings)...if the settings cannot be viewed?

Just very odd, the system is running "fine" (windows is booting and running)....some video signal is being sent with power....just no image.

> PLEASE HELP OTHERS - Report back what did/didn't work for those referencing this thread.<

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June 24, 2011 at 17:44:03
When you connect an add in AGP card it should automatically disable the onboard graphics.

Power supply could be underpowered for the AGP card. Without more info we can't say. I asked you to post the model of the PSU. Also post the model of the AGP card.

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July 2, 2011 at 15:41:49
Well, I did not get the PS details...and the AGP video card may have been a type this MOBO would not support.

SOLUTION: Instead of digging all that info up (this is an older PC).....

I just got a plain 8mb PCI video card....and that solved the problem.

Fortunately, the BIOS video settings were set to it automatically grabbed that external pci card.

So...things worked out. I think this may be, maybe, the second time I've seen this (only the integrated video failing). Usually, if the integrated video is out....the whole board is out (or beyond dealing with).

Thanks for all feedback...considering AGP incompatibility is what led to the PCI try.

> PLEASE HELP OTHERS - Report back what did/didn't work for those referencing this thread.<

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