Originally
posted by
Jim Sachs:
Well, there is one main difference - both add-on cards have their own memory chips, but the on-board graphics uses system memory. Replaced memory card. Computer working normally ever since (with one random reboot).
Many older PCI video cards had their own memory chips, and
also use system memory for "expansion" or other functions. So, it's possible that the video card(s) are good and the anomalies you were seeing all stemmed from system memory problems.
But perhaps you've already explored that combination.