Posted 09 July 2006 - 04:40 PM
first make sure that the ram is seated securely, if you have more than 2 slots (of the DDR variety) try the ram in different ones.
you may have lost the questionable stick coincidentally at the same time, or maybe you shocked it when installing the video card
judgeing by the components mentioned this seems to be an older system. the good news is that to replace one unit is under $20 on newegg,com or getting one 512mb stick is ~$40