crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

You've done a good job running diagnostics.  Just a couple of things I might try.  Pull both RAM sticks and reseat them just one at a time in each of the slots to both test the RAM and the slots.

I would also replace the PRAM battery:   [product|IF185-047]

crwdns2915684:0crwdne2915684:0:

open