I have a ELite Groups MB L4S8A2, with a 2.0 GhZ Pentium, I had 256M PC2700 Memory from Atlas, I just added a 512M Atlas memory DIMM. My system sometimes reboots itself, programs crash, some web pages don't show all of the content until I move my mouse over the area, etc. I have tried to contact the MB manufacturer, but haven't gotten a reply yet. I am wondering if I need to change to DIMM voltage in my BIOS, or if there is something else that may be the problem. Any and all help would be GREATLY appreciated.