R610 alarm reseat DIMM B5

Colocation facility reported this alarm to me.  Before I make a trip over, wanted to verify course of action.  I plan to migrate vms, shut down host, reseat DIMM B5 as per alarm.  If alarm reappears, will move dimm to another slot and see if error follows.  If so, probably bad DIMM.  Haven't worked much with this server.  Does it have onboard memory diagnostics I can run  and how, or do I need to download diagnostics tools and use cd or usb?