AGP MX400 Trouble

You have tested the card to find that it is not an isolated problem,so at this juncture I would not suggest repair but replace,you can get that one or another equally good card for a good price.
You could use the onboard video until you make a decision on a new card.

I'm not familiar with this particular card, but is it overheating?? If yes, please do this:
If it has a FAN, clean it well.
If you can detach the heatsink, clean the old thermal compound and apply new thermal paste.

Another think to look for are bulged electrolitic caps. Look very well to see if there heads are flat and there is no brownish liquid leaking.

If none of the above applys to you, i sugest you get another board. The one you have probably can't be repaired and if it could be it will cost you much more than a brand new one.

GooD LucK;)

If you get errors with a cold card (which apparently is the case), it's not an overheating issue.

I'm with dMiles. Card has a problem and needs to be replaced. A new card with better performance can be had for about $40.00 US.

Dalton

Just another thought if the Video Card has a Fan on the GPU check that it has not burned out and stopped turning.

This seems to be a common problem on these cards for some reason. If the fan has died you can get a part way solution by replacing it if you can find one available but most likely you will be better off replacing the Video Card.

Col

If the card is doing the same thing on two different computers it is Time For An Overhaul.

You can get a new GeForce 4 for $25 on pricewatch.com

Replace it and Carry On Dude.

Lee