You have several issues withthis machine and little questions keep getting posted in different areas (at least 3 so far). Please try to keep it all in one spot (you decide which one) so we can help you.
All of this get's rather confusing and all of these things are inter-related. THis IE Error posting most likely has to do with hardware (RAM) so how about you delete ALL posts, and make a new one in Hardware and list ALL of the problems you are aware of. Our talented helpers will be along to assist.
