My PC has recently had a blue error screen saying

"stop: c000007b hard error beginning dump of physical memory"

I contacted Dell support twice.  The first time the problem solution didn't work.  Today the same message came up and we called again.  They had me open the tower and reconnect several "grey ribbons".  We hope the problem is fixed, but any help as to why we are having this problem would be helpful.  Tech support archives don't list this problem when we search for this error.  Thanks again for any help.